Weather History for Helena, MT

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Month of April, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 72 °F 53 °F 29 °F
Mean Temperature 56 °F 41 °F 25 °F
Min Temperature 46 °F 30 °F 16 °F
Degree Days  
Heating Degree Days (base 65) 40 24 9 711
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 1 0 28
Dew Point  
Dew Point 40 °F 22 °F -1 °F
Precipitation  
Precipitation 0.38 in 0.04 in 0.00 in 0.78 in
Snowdepth 1.0 in 0.1 in 0.0 in -
Wind  
Wind 43 mph 9 mph 0 mph
Gust Wind 58 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.56 in 30.05 in 29.45 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Apr. 01, 2013 Rise Set
Actual Time 7:06 AM MDT 7:57 PM MDT
Civil Twilight 6:36 AM MDT 8:28 PM MDT
Nautical Twilight 5:59 AM MDT 9:04 PM MDT
Astronomical Twilight 5:21 AM MDT 9:43 PM MDT
Moon 1:25 AM MDT (4/1) 10:41 AM MDT (4/1)
Length of Visible Light 13h 51m
Length of Day
12h 50m
Waning Gibbous, 66% of the Moon is Illuminated
Apr 1
Waning Gibbous
Apr 2
Last Quarter
Apr 10
New
Apr 18
First Quarter
Apr 25
Full

Weather History Calendar

Precipitation Actual month total 0.78 Normal Month Total: 0.98
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
63 | 28 0.00
Average:
54 | 29 0.03
Clear
Actual:
69 | 30 0.00
Average:
54 | 29 0.02
Partly Cloudy
Actual:
62 | 40 0.00
Average:
54 | 29 0.02
Partly Cloudy
Actual:
65 | 37 T
Average:
54 | 29 0.03
Partly Cloudy
Actual:
61 | 42 0.00
Average:
55 | 30 0.03
Rain
Actual:
56 | 38 0.01
Average:
55 | 30 0.03
Snow
Actual:
50 | 29 0.38
Average:
55 | 30 0.03
Snow
Actual:
29 | 20 T
Average:
56 | 30 0.03
Scattered Clouds
Actual:
41 | 16 0.00
Average:
56 | 31 0.03
Partly Cloudy
Actual:
57 | 28 T
Average:
56 | 31 0.03
Partly Cloudy
Actual:
54 | 35 0.00
Average:
56 | 31 0.03
Snow
Actual:
53 | 27 T
Average:
57 | 31 0.03
Partly Cloudy
Actual:
50 | 31 0.01
Average:
57 | 31 0.04
Snow
Actual:
34 | 22 0.14
Average:
57 | 32 0.03
Mostly Cloudy
Actual:
34 | 20 0.00
Average:
58 | 32 0.03
Partly Cloudy
Actual:
35 | 19 T
Average:
58 | 32 0.04
Snow
Actual:
41 | 20 T
Average:
58 | 32 0.03
Partly Cloudy
Actual:
53 | 17 0.00
Average:
59 | 33 0.03
Rain
Actual:
53 | 37 T
Average:
59 | 33 0.04
Partly Cloudy
Actual:
58 | 36 T
Average:
59 | 33 0.03
Snow
Actual:
36 | 22 0.23
Average:
59 | 33 0.04
Snow
Actual:
40 | 21 T
Average:
60 | 34 0.03
Partly Cloudy
Actual:
50 | 19 0.00
Average:
60 | 34 0.03
Clear
Actual:
60 | 25 0.00
Average:
60 | 34 0.04
Scattered Clouds
Actual:
65 | 43 0.00
Average:
61 | 34 0.04
Clear
Actual:
71 | 37 0.00
Average:
61 | 35 0.03
Clear
Actual:
72 | 39 0.00
Average:
61 | 35 0.04
Rain
Actual:
64 | 46 T
Average:
62 | 35 0.04
Scattered Clouds
Actual:
58 | 35 0.01
Average:
62 | 36 0.04
Snow
Actual:
42 | 27 T
Average:
62 | 36 0.04
 

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

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Apr high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 63 46 28 25 22 20 75 48 20 30.19 30.10 30.02 10 10 10 12 4 20 0.00  
2 69 50 30 30 26 22 69 46 22 30.16 30.04 29.93 10 10 10 18 6 24 0.00  
3 62 51 40 32 30 27 53 41 29 30.10 30.06 29.99 10 10 10 20 6 29 0.00  
4 65 51 37 40 32 28 76 51 26 30.09 29.96 29.78 10 10 10 21 4 26 T  
5 61 52 42 39 31 24 76 51 25 29.92 29.81 29.74 10 10 10 29 13 39 0.00  
6 56 47 38 37 31 27 64 53 41 29.92 29.87 29.81 10 10 8 28 8 37 0.01 Rain
7 50 40 29 37 31 23 89 72 54 29.91 29.74 29.58 10 7 1 28 7 33 0.38 Rain , Snow
8 29 25 20 23 16 11 75 63 50 30.46 30.13 29.82 10 10 10 24 14 30 T Snow
9 41 29 16 21 13 10 75 53 30 30.56 30.45 30.33 10 10 10 10 5 17 0.00  
10 57 43 28 38 26 19 69 53 36 30.33 30.05 29.82 10 10 10 30 6 37 T  
11 54 45 35 31 23 17 62 44 26 30.06 29.95 29.85 10 10 10 24 14 33 0.00  
12 53 40 27 28 23 18 75 51 26 30.15 29.95 29.63 10 10 9 16 5 21 T Snow
13 50 41 31 34 21 7 76 48 19 29.77 29.57 29.45 10 10 10 43 14 52 0.01  
14 34 28 22 27 21 15 100 77 54 30.13 29.88 29.73 10 5 1 22 9 26 0.14 Snow
15 34 27 20 16 14 10 77 58 39 30.30 30.15 29.93 10 10 10 22 11 29 0.00  
16 35 27 19 18 14 9 77 57 36 30.45 30.33 30.14 10 10 9 22 12 28 T  
17 41 31 20 18 14 8 77 54 30 30.47 30.39 30.27 10 10 4 15 6 22 T Snow
18 53 35 17 20 17 11 77 52 27 30.37 30.29 30.22 10 10 10 24 9 31 0.00  
19 53 45 37 34 28 20 76 59 41 30.19 29.99 29.85 10 10 8 25 11 31 T Rain
20 58 47 36 32 27 22 62 45 28 30.05 29.95 29.88 10 10 10 36 14 45 T  
21 36 29 22 28 22 16 92 78 64 30.43 30.18 30.01 10 4 0 22 10 28 0.23 Fog , Snow
22 40 31 21 20 14 -1 81 51 20 30.56 30.44 30.26 10 8 2 15 6 22 T Snow
23 50 35 19 23 17 12 77 51 25 30.46 30.34 30.25 10 10 10 22 4 26 0.00  
24 60 43 25 25 20 15 75 47 19 30.37 30.18 29.97 10 10 10 24 10 31 0.00  
25 65 54 43 25 20 16 37 27 17 30.04 29.92 29.84 10 10 10 28 14 35 0.00  
26 71 54 37 30 26 22 64 41 17 30.18 30.11 30.04 10 10 10 26 10 33 0.00  
27 72 56 39 31 25 18 60 38 15 30.14 30.01 29.90 10 10 10 32 15 46 0.00  
28 64 55 46 35 29 21 60 42 23 30.03 29.93 29.84 10 10 10 28 10 36 T Rain
29 58 47 35 36 22 11 65 40 15 29.87 29.71 29.57 10 10 10 43 16 58 0.01  
30 42 35 27 23 19 12 69 53 37 30.38 30.11 29.87 10 10 9 22 9 31 T Snow