Monthly and annual averages (1951 – 1980) of rainfall (mm)
for a selection of stations in Scotland

Location

Alt(m)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Shetland

                           

Lerwick

82

127

93

93

72

64

64

67

78

113

119

140

147

1177

Fair Isle

57

96

63

81

48

39

41

54

66

97

109

117

104

910

Orkney

                           

Kirkwall

26

105

71

72

54

53

57

55

77

88

110

120

121

983

Western Isles

                           

Benbecula

5

129

86

89

62

65

76

83

83

119

139

140

132

1203

Stornoway

15

115

77

80

66

62

67

72

74

103

126

129

125

1096

Highland

                           

Ullapool

12

119

84

93

76

73

83

80

92

115

155

159

161

1290

Achmore (nr Plockton)

18

104

68

70

56

56

63

78

82

107

112

124

112

1032

Portree (Skye)

27

182

116

129

93

91

104

113

118

170

204

203

210

1732

Onich (nr Fort William)

15

200

132

152

111

103

124

137

150

199

215

220

238

1981

Wick

36

81

58

55

45

47

49

61

74

68

73

90

82

783

Fort Augustus

21

112

72

83

58

72

61

65

82

103

124

126

140

1098

Nairn

8

48

34

33

36

43

46

62

75

50

54

60

52

593

Glenmore Lodge

341

96

64

71

68

76

73

87

107

80

96

100

106

1024

Grampian

                           

Gordon Castle

32

55

44

42

42

51

55

77

89

57

66

75

67

720

Braemar

339

93

59

59

51

65

55

58

76

73

87

87

96

859

Craibstone (nr Aberdeen)

102

77

57

54

51

62

54

79

83

66

78

80

80

821

Tayside

                           

Pitlochry

144

94

59

52

47

64

62

65

72

70

76

69

94

824

Arbroath

29

50

40

40

38

48

44

62

67

50

52

54

54

599

Perth

23

70

52

47

43

57

51

67

72

63

65

69

82

738

Fife

                           

St. Andrews

18

62

48

44

39

50

44

61

68

55

55

63

64

653

Lothian

                           

Edinburgh (Royal

                           

Botanic Garden)

26

47

39

39

38

49

45

69

73

57

56

58

56

626

Dunbar

23

46

33

33

33

47

41

55

68

47

48

55

49

555

Borders

                           

Floors Castle (Kelso)

59

55

43

38

40

55

51

63

75

57

59

63

57

656

Central

                           

Callander

107

164

113

115

81

97

86

97

113

141

147

175

193

1522

Strathclyde

                           

Tiree

9

120

71

77

60

56

66

79

83

123

125

123

123

1106

Inveraray Castle

12

210

132

150

115

106

124

137

148

209

225

228

252

2036

Eallabus (Islay)

21

139

85

92

70

67

74

93

93

128

139

149

149

1278

Glasgow Airport

5

96

63

65

50

62

58

68

83

95

98

105

108

951

Auchincruive (nr Ayr)

45

82

50

53

47

51

58

80

91

100

97

99

93

901

Aros (Mull)

37

210

116

142

97

96

109

120

133

199

208

203

220

1853

Dumfries and Galloway

                           

West Freugh (nr Stranraer)

15

100

65

67

53

55

57

70

82

98

100

105

103

955

Loch Dee

244

236

154

168

130

121

122

142

184

214

222

241

263

2197

Dumfries

49

103

72

66

55

71

63

77

93

104

106

109

104

1023

Eskdalemuir

242

150

99

108

86

94

95

107

122

142

140

153

160

1456

 

 

 

30-year (1951-80) average duration of bright sunshine in hours for selected Scottish stations

Location

Alt(m)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Total

Shetland

                             

Lerwick

82

0.7

1.9

2.7

4.5

4.9

5.3

4.0

3.8

3.2

2.0

1.1

0.5

2.9

1056

Fair Isle

57

0.9

2.1

3.1

5.0

6.2

5.7

4.4

4.7

3.9

2.3

1.2

0.5

3.3

1206

Orkney

                             

Kirkwall

26

1.0

2.3

3.1

4.9

5.2

5.4

4.3

4.1

3.4

2.4

1.3

0.7

3.2

1160

Western Isles

                             

Stornoway

15

1.2

2.5

3.6

5.2

6.0

5.9

4.2

4.4

3.6

2.5

1.5

0.8

3.4

1256

Benbecula

5

1.3

2.5

3.7

5.8

6.5

6.5

4.6

4.9

3.8

2.5

1.6

0.9

3.7

1361

Highland

                             

Prabost (Skye)

67

1.3

2.7

3.5

5.2

6.0

5.8

4.1

4.3

3.3

2.3

1.5

1.0

3.4

1243

Onich (nr Fort William)

15

0.9

2.2

2.9

4.4

5.3

5.0

3.7

3.8

2.9

2.1

1.1

0.6

2.9

1059

Wick

36

1.3

2.6

3.4

5.0

5.2

5.4

4.4

4.3

3.7

2.8

1.6

1.0

3.4

1240

Nairn

8

1.4

2.8

3.6

4.9

5.3

5.6

4.7

4.3

3.9

2.9

1.8

1.2

3.5

1290

Fort Augustus

21

0.8

2.1

2.9

4.2

5.0

5.0

3.8

3.8

2.9

2.0

1.0

0.6

2.9

1044

Glenmore Lodge

341

0.8

2.4

3.4

4.4

5.1

5.2

4.2

4.1

3.5

2.6

1.1

0.5

3.1

1137

Grampian

                             

Braemar

339

0.8

2.0

2.9

4.5

5.2

5.5

4.9

4.2

3.4

2.1

1.1

0.6

3.1

1137

Craibstone (nr Aberdeen)

102

1.7

2.7

3.4

5.0

5.6

6.0

5.2

4.7

3.9

3.1

2.1

1.5

3.7

1367

Tayside

                             

Perth

23

1.4

2.3

3.2

5.1

5.7

6.0

5.5

4.5

3.7

2.7

1.8

1.1

3.6

1309

Arbroath

29

1.8

2.9

3.6

5.6

6.1

6.4

5.9

5.2

4.4

3.2

2.4

1.6

4.1

1499

Fife

                             

St Andrews

18

1.8

2.6

3.4

5.1

5.8

6.2

5.6

4.9

4.2

3.1

2.2

1.5

3.9

1415

Lothian

                             

Edinburgh

                             

(Royal Botanic Garden)

26

1.5

2.4

3.2

4.9

5.7

6.1

5.5

4.8

4.0

3.0

2.0

1.3

3.7

1351

Dunbar

23

1.8

2.8

3.7

5.4

6.1

6.7

6.1

5.4

4.4

3.4

2.4

1.7

4.2

1523

Strathclyde

                             

Tiree

9

1.4

2.4

3.7

5.8

6.9

6.6

5.1

5.2

3.9

2.5

1.5

0.9

3.8

1400

Glasgow Airport

5

1.3

2.2

3.1

5.1

6.0

6.2

5.3

4.7

3.7

2.6

1.6

1.0

3.6

1303

Prestwick Airport

16

1.6

2.8

3.5

5.6

6.8

6.7

5.7

5.2

4.0

2.9

1.9

1.3

4.0

1465

Dumfries and Galloway

                             

Dumfries

49

1.5

2.5

3.2

4.9

5.8

6.1

5.1

4.9

3.7

2.9

2.0

1.3

3.7

1338

Eskdalemuir

242

1.3

2.2

2.9

4.5

5.3

5.4

4.6

4.3

3.3

2.5

1.8

1.2

3.3

1198

 

 

 

 

Times of sunrise (s.r), sunset (s.s) and end of civil twilight (c.t)

 

1 May

21 June

1 September

21 December

 

(Times in BST)

(Times in BST)

(Times in BST)

(Times in GMT)

 

s.r

s.s

c.t

s.r

s.s

c.t

s.r

s.s

c.t

s.r

s.s

c.t

Lerwick

                       

60°08'N, 1°11'W

05:02

21:02

21:55

03:38

22:34

00:19

05:59

20:08

20:52

09:07

14:57

15:56

Portree (Skye)

                       

57°28'N, 6°19'W

05:34

21:01

21:48

04:25

22:28

23:41

06:26

20:22

21:04

09:06

15:41

16:25

Dumfries

                       

55°04'N, 3°29'W

05:34

20:49

21:32

04:34

21:57

22:56

06:20

20:08

20:34

08:37

15:41

16:33

London

                       

51°30'N, 0°08'W

05:32

20:23

21:02

04:43

21:20

22:09

06:12

19:39

20:13

08:03

15:53

16:34

 

 

 

Averages and extremes of temperature (°C) for a selection of Scottish stations (1951-80)

Location

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Auchincruive

                         

Average Daily Max

6.2

6.3

8.5

11.1

14.4

17.0

17.7

17.7

15.7

13.0

8.9

7.3

12.0

Average Daily Min

0.9

0.7

2.2

3.7

6.1

8.9

10.5

10.5

9.0

6.9

3.3

2.0

5.4

Average Monthly Max

10.8

10.6

13.0

16.3

20.8

23.6

23.3

22.6

20.3

17.5

13.4

11.7

 

Average Monthly Min

–6.4

–5.5

–3.4

–1.8

0.7

3.6

5.4

4.8

2.4

0.2

–3.2

–4.8

 

Absolute Max

14.4

12.8

18.3

20.5

25.4

28.3

29.4

29.8

24.4

22.2

16.5

13.9

29.8

Absolute Min

–11.7

–10.6

–11.1

–3.9

–2.8

1.1

2.2

1.7

–1.1

–3.4

–6.7

–10.6

–11.7

Braemar

                         

Average Daily Max

3.7

3.8

6.1

9.3

12.9

16.3

17.2

16.7

14.2

10.9

6.4

4.7

10.2

Average Daily Min

–2.5

–3.1

–0.9

0.7

3.5

6.6

8.2

8.0

6.3

4.1

0.2

–0.9

2.5

Average Monthly Max

9.0

8.9

11.8

16.0

20.8

23.4

23.6

22.6

20.0

16.3

12.0

10.0

 

Average Monthly Min

–13.3

–13.4

–9.1

–5.9

–2.3

0.5

2.2

1.0

–0.8

–3.4

–8.6

–10.4

 

Absolute Max

11.8

13.3

17.2

21.0

24.6

27.8

30.0

30.0

23.9

23.0

15.1

12.8

30.0

Absolute Min

–22.2

–25.0

–21.7

–10.0

–6.7

–2.2

–0.5

–2.0

–6.0

–8.1

–14.4

–16.6

–25.0

Craibstone (near Aberdeen)

                         

Average Daily Max

5.0

5.3

7.2

9.8

12.4

15.7

17.0

16.8

14.9

12.0

7.9

6.1

10.8

Average Daily Min

0.2

0.0

1.4

2.6

5.1

7.9

9.4

9.5

8.1

6.1

2.6

1.2

4.5

Average Monthly Max

10.4

11.0

13.2

16.3

19.1

22.4

22.9

22.1

20.6

17.3

13.1

11.5

 

Average Monthly Min

-5.8

–5.6

–3.4

–2.1

0.4

3.2

4.8

4.6

3.0

0.7

–2.4

–4.1

 

Absolute Max

14.2

16.3

20.0

20.0

22.9

26.1

26.7

26.1

25.0

21.1

18.3

14.3

26.7

Absolute Min

–11.7

–12.2

–11.7

–6.7

–3.0

0.4

1.7

1.7

–0.6

–1.7

–5.0

–7.8

–12.2

Dumfries

                         

Average Daily Max

5.6

6.0

8.2

11.2

14.4

17.3

18.3

18.1

15.9

12.9

8.6

6.8

11.9

Average Daily Min

0.4

0.3

1.7

3.3

6.0

9.0

10.6

10.5

8.8

6.4

2.9

1.5

5.1

Average Monthly Max

10.5

10.3

12.9

16.4

20.9

23.9

23.9

23.0

20.4

17.3

13.2

11.5

 

Average Monthly Min

–6.8

–5.9

–4.0

–2.1

0.5

3.9

5.5

5.3

2.6

–0.5

–4.2

–5.3

 

Absolute Max

14.3

13.3

17.8

19.3

25.2

28.3

29.8

28.6

25.6

22.8

15.6

13.9

29.8

Absolute Min

–13.9

–11.1

–12.2

–3.9

–2.2

0.6

2.8

2.2

–1.1

–3.9

–9.0

–10.6

–13.9

Edinburgh (Royal Botanic Garden)

                         

Average Daily Max

6.2

6.4

8.5

11.2

14.2

17.1

18.4

18.2

16.3

13.3

9.0

7.1

12.2

Average Daily Min

0.4

0.3

1.9

3.6

6.2

9.3

10.9

10.7

9.0

6.5

2.6

1.5

5.2

Average Monthly Max

11.6

11.4

13.7

17.6

20.6

23.4

23.3

23.1

21.1

18.3

14.3

12.4

 

Average Monthly Min

-6.6

–6.4

–4.0

–2.2

0.8

4.5

6.3

5.5

2.8

–0.3

–4.0

–5.3

 

Absolute Max

14.4

15.0

20.0

20.9

25.2

27.5

28.3

30.0

23.9

24.4

17.3

14.4

30.0

Absolute Min

–12.8

–11.7

–11.1

–6.1

–1.7

1.3

4.4

2.2

–1.1

–3.7

–8.3

–11.1

–12.8

Eskdalemuir

                         

Average Daily Max

4.3

4.6

7.0

10.3

13.6

16.5

17.4

17.2

14.8

11.8

7.3

5.4

10.8

Average Daily Min

–1.5

–1.6

–0.1

1.4

4.0

7.0

8.7

8.7

7.0

4.7

1.0

–0.3

3.3

Average Monthly Max

9.1

9.4

12.6

16.5

20.8

23.6

23.4

22.6

19.9

16.8

11.8

10.2

 

Average Monthly Min

–10.4

–9.4

–7.2

–5.6

–2.8

0.8

2.1

1.7

–0.3

–2.9

–7.1

–8.0

 

Absolute Max

11.2

13.3

19.4

20.0

25.3

27.4

29.8

28.4

25.0

22.2

13.6

13.4

29.8

Absolute Min

–17.4

–16.2

–14.7

–9.8

–7.1

–2.5

–1.7

–2.2

–5.0

–7.8

–11.3

–18.5

–18.5

Fair Isle

                         

Average Daily Max

5.7

5.5

6.0

7.3

9.4

11.6

13.2

13.7

12.0

10.2

8.1

6.6

9.1

Average Daily Min

3.0

2.9

3.1

3.9

5.9

7.9

9.8

10.3

8.9

7.5

5.4

4.0

6.0

Average Monthly Max

9.1

8.3

8.9

10.0

13.3

15.2

16.5

16.3

14.7

13.0

11.2

10.0

 

Average Monthly Min

–1.9

–1.9

–1.8

–0.7

2.0

4.6

6.6

7.0

4.5

2.8

0.2

-1.4

 

Absolute Max

10.7

10.5

10.9

12.2

17.7

18.0

20.1

20.2

15.9

14.4

13.1

11.5

20.2

Absolute Min

–4.5

–5.1

–5.0

–4.0

–1.6

1.5

4.2

4.4

1.4

–0.9

–3.0

–4.3

–5.1

Glasgow Airport

                         

Average Daily Max

6.1

6.5

8.8

11.9

15.1

17.9

18.7

18.6

16.3

13.2

8.9

7.2

12.4

Average Daily Min

0.0

0.0

1.5

3.2

5.9

8.8

10.3

10.1

8.5

6.1

2.3

1.1

4.8

Average Monthly Max

11.2

11.1

13.4

17.3

21.8

24.2

24.1

23.7

20.8

17.7

13.7

12.0

 

Average Monthly Min

–8.0

–7.1

–5.1

–3.2

–0.6

3.0

4.5

3.5

1.1

–1.7

–5.6

–6.6

 

Absolute Max

13.3

13.9

18.9

20.2

27.4

28.9

29.2

31.2

26.7

23.9

15.6

13.3

31.2

Absolute Min

–17.4

–15.0

–12.5

–5.4

–3.9

1.2

0.8

1.1

–4.0

–5.2

–10.4

–12.6

–17.4

Lerwick

                         

Average Daily Max

5.1

4.9

6.0

7.8

10.0

12.5

13.7

14.0

12.5

10.3

7.4

6.0

9.2

Average Daily Min

1.0

0.7

1.7

2.6

5.0

7.4

9.0

9.4

8.1

6.3

3.3

1.8

4.7

Average Monthly Max

8.8

8.3

9.3

11.3

14.1

16.9

17.7

17.2

15.6

13.7

10.6

9.6

 

Average Monthly Min

–4.1

–4.3

–3.2

–2.2

0.4

3.1

5.5

5.3

3.4

0.7

–2.2

–3.7

 

Absolute Max

11.8

11.1

13.3

15.0

19.4

23.3

22.8

20.9

19.4

17.2

12.8

11.1

23.3

Absolute Min

–8.9

–7.3

–7.2

–5.7

–2.2

–0.6

3.5

2.9

–0.6

–2.2

–5.7

–8.2

–8.9

Nairn

                         

Average Daily Max

5.8

6.1

8.5

10.7

13.6

16.5

17.6

17.4

15.6

12.7

8.4

6.7

11.6

Average Daily Min

0.1

–0.4

1.4

2.8

5.6

8.4

10.1

10.0

8.3

6.1

2.4

1.1

4.7

Average Monthly Max

11.6

11.5

14.0

16.6

20.4

23.6

23.6

23.5

21.0

18.4

13.9

12.0

 

Average Monthly Min

–7.5

–7.9

–4.8

–3.1

–0.1

2.5

4.9

4.2

2.2

–0.1

–3.8

–5.8

 

Absolute Max

15.0

15.0

17.8

19.4

25.9

27.8

29.0

30.6

25.0

24.4

17.9

14.3

30.6

Absolute Min

–12.8

–16.7

–11.1

–6.7

–3.3

–2.2

2.0

0.5

–1.9

–3.3

–10.6

–12.2

–16.7

Onich

                         

Average Daily Max

6.3

6.7

8.6

11.2

14.5

16.6

17.2

17.3

15.4

12.8

8.8

7.3

11.9

Average Daily Min

0.9

0.5

2.0

3.2

5.9

8.4

9.9

9.9

8.5

6.5

3.0

1.9

5.0

Average Monthly Max

11.2

11.2

12.8

16.6

21.5

23.5

23.3

22.7

20.0

17.4

13.3

12.0

 

Average Monthly Min

–5.9

–5.6

–3.8

–2.3

–0.1

3.4

4.3

4.2

2.5

–0.2

–3.6

–4.8

 

Absolute Max

16.7

14.4

18.9

21.5

26.5

28.5

30.0

29.5

23.9

23.3

16.0

14.4

30.0

Absolute Min

–12.0

–10.0

–8.0

–6.5

–4.0

0.5

2.2

1.7

–2.0

–3.5

–6.7

–11.1

–12.0

Perth

                         

Average Daily Max

5.7

6.0

8.4

11.8

14.9

18.0

19.1

18.6

16.2

12.9

8.5

6.6

12.2

Average Daily Min

–0.6

–0.6

1.4

3.0

5.8

8.8

10.3

10.1

8.3

5.8

1.8

0.6

4.5

Average Monthly Max

11.3

11.1

13.1

17.6

21.6

24.4

24.8

23.7

21.1

17.5

13.8

11.9

 

Average Monthly Min

–8.4

–8.0

–4.6

–2.5

0.3

3.7

5.2

4.0

1.6

–1.3

–5.2

–6.6

 

Absolute Max

14.5

15.0

18.3

21.7

27.0

27.2

30.0

28.9

26.4

22.5

16.0

14.4

30.0

Absolute Min

–14.9

–18.9

–13.9

–5.0

–2.8

–0.5

1.7

0.0

–3.9

–4.4

–10.0

–13.9

–18.9

Tiree

                         

Average Daily Max

7.2

7.0

8.3

10.3

12.7

14.8

15.8

16.1

14.7

12.6

9.6

8.2

11.4

Average Daily Min

2.8

2.5

3.5

4.6

6.9

9.3

10.8

10.9

9.9

8.3

5.1

4.0

6.5

Average Monthly Max

10.3

9.9

11.0

13.7

17.2

19.7

19.6

19.3

17.7

15.5

12.7

11.2

 

Average Monthly Min

–2.2

–2.8

–1.2

–0.2

2.2

5.2

7.3

7.0

5.2

3.2

0.1

–1.2

 

Absolute Max

12.2

11.1

13.9

17.8

22.2

23.3

26.1

23.9

21.1

18.3

14.6

12.6

26.1

Absolute Min

–5.9

–6.1

–4.6

–4.4

–0.3

2.5

6.0

4.9

1.7

–0.3

–3.9

–6.7

–6.7

Wick

                         

Average Daily Max

5.6

5.7

7.3

9.3

11.3

14.2

15.4

15.4

14.1

11.8

8.2

6.5

10.4

Average Daily Min

0.8

0.5

1.8

2.9

5.4

7.8

9.3

9.6

8.3

6.6

2.9

1.6

4.8

Average Monthly Max

10.0

10.1

12.1

13.8

16.7

19.6

20.2

19.9

18.8

16.5

12.5

10.8

 

Average Monthly Min

–5.4

–5.6

–3.9

–2.6

–0.3

2.5

4.0

3.8

2.4

0.3

–3.0

–4.2

 

Absolute Max

12.8

14.4

17.3

17.2

20.6

23.3

25.6

22.9

23.9

25.0

16.6

13.0

25.6

Absolute Min

–11.1

–10.6

–8.9

–7.1

–3.9

–0.4

1.7

0.5

–2.0

–2.9

–7.8

–11.7

–11.7

 

 

 

 

30-year (1951-80) average number of days in month with snow lying at 0900 hours
at selected Scottish stations

Location

Alt(m)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Shetland

                           

Lerwick

82

7.5

7.8

3.8

1.4

0.1

0.0

0.0

0.0

0.0

0.2

2.4

4.9

28.1

Fair Isle

57

5.1

3.3

2.5

0.7

0.0

0.0

0.0

0.0

0.0

0.0

1.1

2.9

15.9

Western Isles

                           

Stornoway

15

3.5

2.8

1.4

0.2

0.0

0.0

0.0

0.0

0.0

0.0

1.0

1.5

10.4

Highland

                           

Wick

36

5.4

5.6

2.2

0.5

0.0

0.0

0.0

0.0

0.0

0.0

1.5

3.0

18.2

Nairn

8

5.5

5.6

1.7

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.8

2.7

16.5

Grampian

                           

Braemar

339

15.6

15.9

9.7

2.4

0.1

0.0

0.0

0.0

0.0

0.3

4.6

16.4

59.0

Craibstone
(near Aberdeen)

102

9.6

9.6

4.9

0.9

0.1

0.0

0.0

0.0

0.0

0.2

2.6

4.7

32.6

Tayside

                           

Perth

23

5.7

5.2

1.2

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.5

2.4

15.1

Lothian

                           

Edinburgh Royal Botanic Gdn.

26

5.0

5.3

1.1

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.5

1.9

14.0

Royal Observatory

134

5.5

6.1

1.8

0.3

0.0

0.0

0.0

0.0

0.0

0.0

1.0

2.0

16.7

Penicuik

185

9.6

9.3

3.8

0.9

0.1

0.0

0.0

0.0

0.0

0.0

1.9

4.7

30.3

Dunbar

23

1.7

2.6

0.4

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.2

0.6

5.6

Strathclyde

                           

Tiree

9

1.4

1.2

0.4

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.4

3.6

Glasgow Airport

5

3.5

1.8

0.7

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.6

1.3

8.0

Auchincruive
(near Ayr)

45

2.3

1.7

0.7

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.5

0.6

5.9

Dumfries & Galloway

                           

Eskdalemuir

242

10.1

9.6

4.7

0.7

0.0

0.0

0.0

0.0

0.0

0.0

1.9

5.0

32.0

Note: 0.0 in the 30-year period indicates there was one day or less with snow lying at 0900 hours in the month.