Weather History for Helena, MT

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Month of October, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 78 °F 55 °F 30 °F
Mean Temperature 60 °F 44 °F 26 °F
Min Temperature 51 °F 32 °F 19 °F
Degree Days  
Heating Degree Days (base 65) 39 21 5 652
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 2 0 48
Dew Point  
Dew Point 48 °F 28 °F 13 °F
Precipitation  
Precipitation 0.26 in 0.03 in 0.00 in 0.65 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 40 mph 6 mph 0 mph
Gust Wind 58 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.60 in 30.08 in 29.48 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Oct. 13, 2012 Rise Set
Actual Time 7:43 AM MDT 6:43 PM MDT
Civil Twilight 7:13 AM MDT 7:14 PM MDT
Nautical Twilight 6:38 AM MDT 7:49 PM MDT
Astronomical Twilight 6:03 AM MDT 8:24 PM MDT
Moon 5:32 AM MDT (10/13) 5:32 PM MDT (10/13)
Length of Visible Light 12h 00m
Length of Day
11h 00m
Waning Crescent, 4% of the Moon is Illuminated
Oct 13
Waning Crescent
Oct 15
New
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter

Weather History Calendar

Precipitation Actual month total 0.65 Normal Month Total: 0.68
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
78 | 41 0.00
Average:
66 | 38 0.03
Scattered Clouds
Actual:
75 | 42 0.00
Average:
65 | 37 0.03
Snow
Actual:
43 | 31 0.09
Average:
65 | 37 0.02
Overcast
Actual:
42 | 30 0.00
Average:
64 | 36 0.03
Partly Cloudy
Actual:
45 | 25 0.00
Average:
64 | 36 0.02
Partly Cloudy
Actual:
48 | 19 0.00
Average:
63 | 36 0.03
Clear
Actual:
65 | 27 0.00
Average:
63 | 35 0.02
Partly Cloudy
Actual:
53 | 34 T
Average:
62 | 35 0.03
Partly Cloudy
Actual:
57 | 36 0.00
Average:
62 | 35 0.02
Scattered Clouds
Actual:
67 | 29 0.00
Average:
62 | 34 0.03
Partly Cloudy
Actual:
57 | 35 0.00
Average:
61 | 34 0.02
Clear
Actual:
74 | 29 0.00
Average:
61 | 34 0.02
Rain
Actual:
63 | 51 T
Average:
60 | 33 0.02
Scattered Clouds
Actual:
66 | 46 0.00
Average:
60 | 33 0.03
Rain
Actual:
65 | 43 T
Average:
59 | 33 0.02
Rain
Actual:
59 | 42 0.26
Average:
59 | 32 0.02
Scattered Clouds
Actual:
51 | 36 0.00
Average:
58 | 32 0.03
Clear
Actual:
60 | 26 0.00
Average:
58 | 32 0.02
Scattered Clouds
Actual:
69 | 34 0.00
Average:
57 | 32 0.02
Rain
Actual:
56 | 31 0.01
Average:
57 | 31 0.02
Scattered Clouds
Actual:
49 | 24 0.00
Average:
57 | 31 0.02
Snow
Actual:
42 | 26 0.19
Average:
56 | 31 0.02
Snow
Actual:
31 | 20 0.06
Average:
56 | 30 0.02
Mostly Cloudy
Actual:
32 | 21 0.00
Average:
55 | 30 0.02
Snow
Actual:
30 | 22 T
Average:
55 | 30 0.02
Snow
Actual:
35 | 19 T
Average:
54 | 29 0.02
Snow
Actual:
44 | 28 0.04
Average:
54 | 29 0.02
Mostly Cloudy
Actual:
60 | 36 T
Average:
53 | 29 0.01
Partly Cloudy
Actual:
64 | 43 0.00
Average:
53 | 28 0.02
Scattered Clouds
Actual:
66 | 36 0.00
Average:
52 | 28 0.01
Scattered Clouds
Actual:
62 | 41 0.00
Average:
52 | 28 0.02
 

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
Oct high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 78 60 41 35 31 27 67 42 16 30.33 30.15 29.89 10 10 7 25 6 33 0.00  
2 75 59 42 38 31 20 76 45 14 29.96 29.84 29.73 10 10 10 25 12 33 0.00  
3 43 37 31 36 30 26 96 80 64 30.60 30.36 29.99 10 10 8 24 11 29 0.09 Rain , Snow
4 42 36 30 28 27 26 85 69 53 30.55 30.45 30.33 10 10 10 15 6 18 0.00  
5 45 35 25 27 22 17 75 56 36 30.54 30.48 30.34 10 10 10 17 6 20 0.00  
6 48 34 19 27 19 15 84 55 26 30.54 30.44 30.32 10 10 10 7 2 16 0.00  
7 65 46 27 26 24 22 78 49 20 30.30 30.14 30.00 10 10 10 22 6 26 0.00  
8 53 44 34 38 32 25 76 59 42 30.16 30.03 29.97 10 10 10 20 6 23 T  
9 57 47 36 32 30 28 82 58 33 30.24 30.16 30.10 10 10 10 12 4 14 0.00  
10 67 48 29 38 31 26 85 55 24 30.18 30.08 29.93 10 10 9 22 5 25 0.00  
11 57 46 35 34 30 27 76 58 40 30.28 30.14 29.95 10 10 10 14 5 16 0.00  
12 74 52 29 33 26 17 92 52 12 30.03 29.88 29.73 10 10 7 16 3 22 0.00  
13 63 57 51 40 34 21 59 41 22 30.18 30.02 29.85 10 10 10 28 11 38 T Rain
14 66 56 46 40 36 32 66 50 34 30.23 30.11 29.94 10 10 10 16 3 21 0.00  
15 65 54 43 44 38 31 76 54 32 29.92 29.88 29.81 10 10 9 28 8 36 T Rain
16 59 51 42 48 33 19 93 60 26 29.92 29.66 29.48 10 10 2 40 15 58 0.26 Rain
17 51 44 36 22 19 16 48 36 24 30.30 30.11 29.92 10 10 10 33 17 44 0.00  
18 60 43 26 26 22 16 78 48 18 30.39 30.26 30.09 10 10 8 23 5 29 0.00  
19 69 52 34 38 31 26 75 51 26 30.04 29.84 29.70 10 10 10 25 7 32 0.00  
20 56 44 31 43 31 20 76 59 41 29.92 29.72 29.60 10 10 10 25 7 33 0.01 Rain
21 49 37 24 23 19 13 75 50 25 30.03 29.96 29.91 10 10 10 10 3 13 0.00  
22 42 34 26 32 25 18 100 73 46 29.96 29.77 29.64 10 5 1 17 5 21 0.19 Snow
23 31 26 20 25 23 18 96 87 78 30.14 29.92 29.68 10 6 1 14 4 16 0.06 Snow
24 32 27 21 25 22 19 92 84 75 30.33 30.19 30.02 10 10 10 12 4 15 0.00  
25 30 26 22 21 17 15 88 71 53 30.60 30.44 30.23 10 8 2 12 6 14 T Snow
26 35 27 19 26 21 15 92 78 63 30.59 30.40 30.10 10 10 8 6 1 6 T Snow
27 44 36 28 34 29 25 92 77 62 30.22 30.11 29.97 10 8 1 8 1 10 0.04 Snow
28 60 48 36 38 35 32 92 65 37 30.03 29.95 29.86 10 10 10 24 5 32 T  
29 64 54 43 41 37 30 82 60 37 30.06 29.96 29.90 10 10 10 32 8 43 0.00  
30 66 51 36 36 33 29 76 52 28 30.14 30.04 29.94 10 10 10 20 3 25 0.00  
31 62 52 41 37 36 35 76 58 39 30.07 29.98 29.88 10 10 10 13 2 16 0.00