Weather History for Mason City, IA

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 96 °F 77 °F 59 °F
Mean Temperature 77 °F 61 °F 44 °F
Min Temperature 58 °F 45 °F 28 °F
Degree Days  
Heating Degree Days (base 65) 21 5 0 161
Cooling Degree Days (base 65) 12 2 0 50
Growing Degree Days (base 50) 26 12 0 350
Dew Point  
Dew Point 70 °F 42 °F 21 °F
Precipitation  
Precipitation 0.39 in 0.04 in 0.00 in 1.15 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 52 mph 9 mph 0 mph
Gust Wind 69 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 30.03 in 29.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 10, 2012 Rise Set
Actual Time 6:47 AM CDT 7:31 PM CDT
Civil Twilight 6:19 AM CDT 8:00 PM CDT
Nautical Twilight 5:45 AM CDT 8:34 PM CDT
Astronomical Twilight 5:09 AM CDT 9:09 PM CDT
Moon 1:02 AM CDT (9/10) 4:07 PM CDT (9/10)
Length of Visible Light 13h 40m
Length of Day
12h 43m
Waning Crescent, 30% of the Moon is Illuminated
Sep 10
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.15 Normal Month Total: 3.27
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
87 | 58 0.00
Average:
78 | 55 0.12
Clear
Actual:
92 | 54 0.00
Average:
78 | 54 0.11
Thunderstorm
Actual:
84 | 57 T
Average:
78 | 54 0.11
Thunderstorm
Actual:
96 | 58 0.28
Average:
78 | 54 0.11
Thunderstorm
Actual:
83 | 53 0.18
Average:
77 | 53 0.12
Scattered Clouds
Actual:
83 | 49 0.00
Average:
77 | 53 0.12
Thunderstorm
Actual:
73 | 49 T
Average:
77 | 53 0.12
Clear
Actual:
82 | 43 0.00
Average:
76 | 52 0.11
Clear
Actual:
76 | 46 0.00
Average:
76 | 52 0.11
Clear
Actual:
82 | 41 0.00
Average:
76 | 51 0.12
Clear
Actual:
94 | 58 0.00
Average:
75 | 51 0.11
Rain
Actual:
72 | 51 0.39
Average:
75 | 50 0.11
Rain
Actual:
70 | 49 0.22
Average:
75 | 50 0.11
Clear
Actual:
79 | 47 0.00
Average:
74 | 49 0.10
Clear
Actual:
80 | 51 0.00
Average:
74 | 49 0.11
Clear
Actual:
80 | 50 0.00
Average:
73 | 48 0.11
Rain
Actual:
64 | 46 0.05
Average:
73 | 48 0.10
Scattered Clouds
Actual:
62 | 36 0.00
Average:
73 | 47 0.11
Clear
Actual:
81 | 45 0.00
Average:
72 | 47 0.11
Clear
Actual:
68 | 40 T
Average:
72 | 46 0.11
Rain
Actual:
70 | 43 0.03
Average:
71 | 46 0.11
Partly Cloudy
Actual:
59 | 35 0.00
Average:
71 | 46 0.11
Clear
Actual:
60 | 28 0.00
Average:
70 | 45 0.10
Clear
Actual:
78 | 32 0.00
Average:
70 | 45 0.11
Clear
Actual:
81 | 43 0.00
Average:
70 | 44 0.10
Clear
Actual:
73 | 33 0.00
Average:
69 | 44 0.11
Clear
Actual:
71 | 33 0.00
Average:
69 | 43 0.10
Clear
Actual:
75 | 34 0.00
Average:
68 | 43 0.10
Clear
Actual:
83 | 44 0.00
Average:
68 | 42 0.10
Clear
Actual:
82 | 42 0.00
Average:
67 | 42 0.10
 

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
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 87 73 58 59 53 50 84 57 29 30.07 30.03 29.99 10 10 9 16 7 25 0.00  
2 92 73 54 64 59 50 86 62 38 30.01 29.94 29.88 10 10 10 13 6 20 0.00  
3 84 71 57 70 64 57 100 78 55 29.97 29.91 29.87 10 7 0 14 5 17 T Fog , Thunderstorm
4 96 77 58 69 61 56 100 66 31 29.96 29.87 29.74 10 4 0 52 8 69 0.28 Fog , Thunderstorm
5 83 68 53 62 57 47 93 64 34 29.93 29.85 29.75 10 9 2 37 9 45 0.18 Rain , Thunderstorm
6 83 66 49 51 45 38 83 52 21 30.02 29.94 29.86 10 10 9 16 5 23 0.00  
7 73 61 49 57 49 40 90 62 33 30.04 29.92 29.79 10 10 10 25 11 30 T Rain , Thunderstorm
8 82 63 43 45 41 38 89 55 20 30.07 29.99 29.83 10 10 10 32 14 40 0.00  
9 76 61 46 50 44 41 93 61 29 30.21 30.14 30.04 10 10 4 14 6 18 0.00  
10 82 62 41 49 44 40 89 57 24 30.14 30.05 29.93 10 10 6 26 14 37 0.00  
11 94 76 58 50 48 44 72 46 19 29.92 29.89 29.83 10 10 10 30 16 40 0.00  
12 72 62 51 55 50 41 96 71 46 30.29 30.13 29.91 10 9 2 20 9 24 0.39 Rain
13 70 60 49 49 44 33 93 60 26 30.40 30.34 30.31 10 10 4 13 6 16 0.22 Rain
14 79 63 47 46 43 38 86 55 23 30.35 30.30 30.25 10 10 5 13 6 18 0.00  
15 80 66 51 45 42 38 77 49 21 30.28 30.18 30.07 10 10 10 24 13 30 0.00  
16 80 65 50 58 51 43 78 59 39 30.06 29.98 29.89 10 10 10 22 11 28 0.00  
17 64 55 46 57 44 33 84 60 36 30.02 29.96 29.89 10 10 6 23 12 30 0.05 Rain
18 62 49 36 40 34 27 86 57 28 30.07 30.02 29.96 10 10 9 17 8 24 0.00  
19 81 63 45 45 36 28 65 42 18 29.94 29.82 29.69 10 10 10 28 14 36 0.00  
20 68 54 40 36 31 25 67 45 22 29.98 29.95 29.91 10 10 9 24 10 31 T  
21 70 57 43 46 40 35 86 60 34 29.92 29.87 29.81 10 10 10 24 6 32 0.03 Rain
22 59 47 35 36 30 23 65 51 36 30.28 30.15 29.88 10 10 10 29 14 36 0.00  
23 60 44 28 31 25 21 78 50 22 30.36 30.30 30.25 10 10 10 17 6 26 0.00  
24 78 55 32 38 31 23 70 45 19 30.22 29.99 29.83 10 10 10 28 13 35 0.00  
25 81 62 43 41 37 32 71 45 19 29.94 29.86 29.80 10 10 8 14 8 18 0.00  
26 73 53 33 37 30 25 82 50 17 30.19 30.08 29.97 10 10 9 10 5 15 0.00  
27 71 52 33 41 34 30 89 58 26 30.29 30.22 30.17 10 9 2 14 4 18 0.00  
28 75 55 34 39 34 30 85 53 20 30.25 30.20 30.14 10 9 2 9 2 12 0.00  
29 83 64 44 39 35 31 76 46 15 30.16 30.09 30.01 10 10 7 16 7 20 0.00  
30 82 62 42 40 36 32 76 48 20 30.02 29.96 29.91 10 9 3 12 4 15 0.00