Weather History for Helena, MT

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Month of February, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 47 °F 37 °F 26 °F
Mean Temperature 38 °F 28 °F 18 °F
Min Temperature 31 °F 19 °F 7 °F
Degree Days  
Heating Degree Days (base 65) 47 37 27 1064
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 37 °F 19 °F 7 °F
Precipitation  
Precipitation 0.28 in 0.02 in 0.00 in 0.55 in
Snowdepth 5.0 in 1.0 in 0.0 in -
Wind  
Wind 47 mph 5 mph 0 mph
Gust Wind 60 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.63 in 30.13 in 29.40 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Feb. 24, 2012 Rise Set
Actual Time 7:17 AM MST 6:05 PM MST
Civil Twilight 6:46 AM MST 6:36 PM MST
Nautical Twilight 6:11 AM MST 7:11 PM MST
Astronomical Twilight 5:36 AM MST 7:46 PM MST
Moon 7:59 AM MST (2/24) 9:29 PM MST (2/24)
Length of Visible Light 11h 49m
Length of Day
10h 48m
Waxing Crescent, 8% of the Moon is Illuminated
Feb 24
Waxing Crescent
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter
Mar 22
New

Weather History Calendar

Precipitation Actual month total 0.55 Normal Month Total: 0.30
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
39 | 22 0.00
Average:
36 | 15 0.01
Snow
Actual:
40 | 22 0.05
Average:
36 | 15 0.01
Clear
Actual:
36 | 15 0.00
Average:
36 | 15 0.01
Clear
Actual:
38 | 13 0.00
Average:
36 | 15 0.01
Scattered Clouds
Actual:
37 | 12 0.00
Average:
36 | 16 0.01
Snow
Actual:
34 | 25 0.01
Average:
37 | 16 0.01
Snow
Actual:
31 | 18 T
Average:
37 | 16 0.01
Scattered Clouds
Actual:
32 | 10 0.00
Average:
37 | 16 0.01
Partly Cloudy
Actual:
47 | 25 0.00
Average:
37 | 16 0.01
Snow
Actual:
29 | 18 0.28
Average:
37 | 16 0.01
Snow
Actual:
26 | 9 0.01
Average:
38 | 16 0.01
Mostly Cloudy
Actual:
31 | 11 0.00
Average:
38 | 16 0.01
Fog
Actual:
34 | 7 0.00
Average:
38 | 16 0.01
Snow
Actual:
34 | 17 0.10
Average:
38 | 17 0.01
Partly Cloudy
Actual:
37 | 11 0.00
Average:
39 | 17 0.01
Partly Cloudy
Actual:
37 | 17 0.00
Average:
39 | 17 0.01
Partly Cloudy
Actual:
43 | 21 0.00
Average:
39 | 17 0.01
Partly Cloudy
Actual:
39 | 21 T
Average:
39 | 17 0.01
Partly Cloudy
Actual:
39 | 20 0.00
Average:
40 | 17 0.01
Partly Cloudy
Actual:
36 | 23 0.00
Average:
40 | 18 0.01
Rain
Actual:
42 | 31 0.03
Average:
40 | 18 0.02
Snow
Actual:
47 | 28 0.06
Average:
41 | 18 0.01
Partly Cloudy
Actual:
37 | 27 0.00
Average:
41 | 18 0.01
Partly Cloudy
Actual:
41 | 28 0.00
Average:
41 | 19 0.01
Snow
Actual:
40 | 29 0.01
Average:
41 | 19 0.01
Mostly Cloudy
Actual:
32 | 20 T
Average:
42 | 19 0.02
Scattered Clouds
Actual:
37 | 16 0.00
Average:
42 | 19 0.01
Clear
Actual:
37 | 14 0.00
Average:
43 | 20 0.01
Snow
Actual:
43 | 19 T
Average:
43 | 20 0.01
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Feb high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 39 31 22 26 22 17 88 70 52 30.20 30.12 29.92 10 10 10 8 3 12 0.00  
2 40 31 22 30 26 19 100 77 54 30.52 30.35 30.20 10 7 1 16 5 21 0.05 Snow
3 36 26 15 22 18 12 92 74 56 30.63 30.56 30.41 10 10 10 8 1 8 0.00  
4 38 26 13 21 17 12 92 70 48 30.63 30.52 30.29 10 10 10 6 1 6 0.00  
5 37 25 12 26 16 10 92 68 44 30.54 30.45 30.21 10 10 10 13 2 14 0.00  
6 34 30 25 27 23 19 85 77 69 30.56 30.44 30.27 10 8 4 12 7 15 0.01 Snow
7 31 25 18 20 17 14 84 74 63 30.54 30.40 30.18 10 9 5 9 4 12 T Snow
8 32 21 10 21 15 8 92 75 58 30.43 30.37 30.18 10 10 7 7 1 8 0.00  
9 47 36 25 28 24 22 85 64 42 30.40 30.33 30.19 10 10 10 17 5 22 0.00  
10 29 24 18 22 18 15 92 83 74 30.48 30.30 30.19 10 3 0 10 7 13 0.28 Fog , Snow
11 26 18 9 16 13 9 92 77 62 30.47 30.33 30.19 10 8 2 7 1 8 0.01 Snow
12 31 21 11 20 15 10 96 80 63 30.22 30.07 29.91 9 8 5 6 1 7 0.00  
13 34 21 7 25 16 7 96 81 66 30.01 29.87 29.77 10 3 0 9 1 13 0.00 Fog
14 34 26 17 24 19 10 92 65 38 30.02 29.89 29.78 10 8 0 16 5 22 0.10 Fog , Snow
15 37 24 11 18 14 9 84 66 47 30.34 30.21 30.05 10 10 10 21 5 25 0.00  
16 37 27 17 21 16 12 73 56 38 30.38 30.29 30.20 10 10 10 17 5 23 0.00  
17 43 32 21 25 23 19 88 66 43 30.31 30.20 30.00 10 10 10 20 6 24 0.00  
18 39 30 21 25 19 16 88 64 40 30.10 30.00 29.85 10 10 9 18 7 22 T  
19 39 30 20 19 15 11 77 59 40 29.99 29.95 29.76 10 10 10 21 6 26 0.00  
20 36 30 23 23 18 11 74 58 41 30.01 29.97 29.92 10 10 10 14 5 17 0.00  
21 42 37 31 34 28 21 92 76 59 29.94 29.83 29.73 10 10 10 24 7 30 0.03 Rain
22 47 38 28 37 30 20 86 72 58 29.88 29.65 29.43 10 8 1 47 14 60 0.06 Rain , Snow
23 37 32 27 22 18 15 69 58 47 30.21 30.11 29.88 10 10 10 28 13 35 0.00  
24 41 35 28 21 17 12 69 52 35 30.30 30.13 29.76 10 10 10 20 7 28 0.00  
25 40 35 29 30 22 14 75 58 40 29.96 29.63 29.40 10 8 0 28 12 35 0.01 Fog , Snow
26 32 26 20 18 15 10 77 58 39 30.19 30.12 29.94 10 10 10 17 4 21 T  
27 37 27 16 17 13 11 80 58 35 30.18 30.10 30.01 10 10 10 8 2 9 0.00  
28 37 26 14 18 13 10 88 66 44 30.01 29.96 29.90 10 10 10 12 4 16 0.00  
29 43 31 19 27 17 8 77 58 39 29.88 29.71 29.49 10 8 1 32 7 39 T Snow