Weather History for Mason City, IA

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 96 °F 72 °F 54 °F
Mean Temperature 83 °F 59 °F 43 °F
Min Temperature 70 °F 46 °F 26 °F
Degree Days  
Heating Degree Days (base 65) 22 7 0 221
Cooling Degree Days (base 65) 18 2 0 53
Growing Degree Days (base 50) 32 9 0 279
Dew Point  
Dew Point 73 °F 48 °F 18 °F
Precipitation  
Precipitation 0.35 in 0.04 in 0.00 in 0.94 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 47 mph 8 mph 0 mph
Gust Wind 59 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 30.05 in 29.70 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 04, 2011 Rise Set
Actual Time 6:40 AM CDT 7:43 PM CDT
Civil Twilight 6:11 AM CDT 8:12 PM CDT
Nautical Twilight 5:36 AM CDT 8:47 PM CDT
Astronomical Twilight 5:00 AM CDT 9:23 PM CDT
Moon 2:39 PM CDT (9/4) 11:50 PM CDT (9/4)
Length of Visible Light 14h 01m
Length of Day
13h 02m
Waxing Crescent, 50% of the Moon is Illuminated
Sep 4
Waxing Crescent
Sep 4
First Quarter
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New

Weather History Calendar

Precipitation Actual month total 0.94 Normal Month Total: 3.27
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
96 | 70 0.00
Average:
78 | 55 0.12
Thunderstorm
Actual:
84 | 67 0.15
Average:
78 | 54 0.11
Thunderstorm
Actual:
77 | 54 0.35
Average:
78 | 54 0.11
Scattered Clouds
Actual:
69 | 46 0.00
Average:
78 | 54 0.11
Clear
Actual:
71 | 39 0.00
Average:
77 | 53 0.12
Fog
Actual:
72 | 37 0.00
Average:
77 | 53 0.12
Fog
Actual:
75 | 40 0.00
Average:
77 | 53 0.12
Scattered Clouds
Actual:
83 | 47 0.00
Average:
76 | 52 0.11
Clear
Actual:
84 | 53 0.00
Average:
76 | 52 0.11
Clear
Actual:
85 | 48 0.00
Average:
76 | 51 0.12
Scattered Clouds
Actual:
89 | 51 0.00
Average:
75 | 51 0.11
Clear
Actual:
91 | 58 0.00
Average:
75 | 50 0.11
Rain
Actual:
71 | 47 T
Average:
75 | 50 0.11
Scattered Clouds
Actual:
60 | 34 0.00
Average:
74 | 49 0.10
Clear
Actual:
59 | 26 0.00
Average:
74 | 49 0.11
Rain
Actual:
54 | 46 T
Average:
73 | 48 0.11
Rain
Actual:
62 | 49 T
Average:
73 | 48 0.10
Rain
Actual:
59 | 55 0.32
Average:
73 | 47 0.11
Fog
Actual:
76 | 45 0.00
Average:
72 | 47 0.11
Rain
Actual:
75 | 47 0.04
Average:
72 | 46 0.11
Mostly Cloudy
Actual:
61 | 50 0.00
Average:
71 | 46 0.11
Rain
Actual:
60 | 43 T
Average:
71 | 46 0.11
Partly Cloudy
Actual:
65 | 34 0.00
Average:
70 | 45 0.10
Fog
Actual:
65 | 32 0.00
Average:
70 | 45 0.11
Partly Cloudy
Actual:
67 | 36 0.00
Average:
70 | 44 0.10
Rain
Actual:
65 | 44 0.08
Average:
69 | 44 0.11
Mostly Cloudy
Actual:
67 | 48 0.00
Average:
69 | 43 0.10
Partly Cloudy
Actual:
81 | 52 0.00
Average:
68 | 43 0.10
Scattered Clouds
Actual:
71 | 50 T
Average:
68 | 42 0.10
Clear
Actual:
66 | 35 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

2011 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 96 83 70 72 69 64 100 68 35 29.89 29.81 29.70 10 6 1 22 11 28 0.00  
2 84 76 67 73 70 66 100 83 65 29.94 29.87 29.73 10 7 2 35 6 46 0.15 Rain , Thunderstorm
3 77 66 54 70 65 51 100 84 68 30.01 29.90 29.85 10 7 2 20 8 26 0.35 Rain , Thunderstorm
4 69 58 46 51 49 45 93 71 49 30.20 30.11 30.02 10 10 10 25 12 30 0.00  
5 71 55 39 49 44 39 96 67 37 30.26 30.20 30.15 10 10 8 10 2 15 0.00  
6 72 55 37 49 43 37 100 69 38 30.26 30.22 30.19 10 7 0 10 3 16 0.00 Fog
7 75 58 40 51 44 39 100 69 38 30.33 30.28 30.24 10 7 0 12 3 22 0.00 Fog
8 83 65 47 58 53 46 100 69 37 30.31 30.23 30.11 10 9 5 15 7 21 0.00  
9 84 69 53 60 55 51 100 69 37 30.10 30.04 29.97 10 10 8 15 6 28 0.00  
10 85 67 48 57 51 48 100 65 29 30.11 30.05 30.02 10 9 2 12 3 17 0.00  
11 89 70 51 58 54 49 93 61 29 30.05 30.01 29.96 10 10 9 18 4 21 0.00  
12 91 75 58 60 57 52 90 60 30 30.00 29.86 29.73 10 10 10 30 15 40 0.00  
13 71 59 47 50 44 38 93 62 31 30.09 30.02 29.91 10 10 10 16 8 23 T Rain
14 60 47 34 47 34 25 82 55 28 30.38 30.23 30.06 10 10 10 23 12 31 0.00  
15 59 43 26 32 26 18 92 57 21 30.48 30.41 30.33 10 10 2 14 5 17 0.00  
16 54 50 46 43 38 32 80 69 58 30.36 30.30 30.25 10 10 10 16 8 23 T Rain
17 62 56 49 47 42 37 80 61 42 30.25 30.19 30.10 10 10 6 21 11 29 T Rain
18 59 57 55 58 55 46 100 84 67 30.10 30.00 29.96 10 4 1 15 7 20 0.32 Rain
19 76 61 45 57 50 36 100 62 23 30.09 30.02 29.98 10 6 0 16 5 21 0.00 Fog
20 75 61 47 56 47 41 86 61 35 29.98 29.87 29.80 10 10 6 29 15 37 0.04 Rain
21 61 56 50 47 45 44 80 71 62 30.12 29.97 29.83 10 10 10 29 17 36 0.00  
22 60 52 43 46 44 38 93 70 47 30.19 30.14 30.09 10 10 8 14 6 21 T Rain
23 65 50 34 43 39 34 100 72 43 30.19 30.13 30.06 10 10 6 12 4 18 0.00  
24 65 49 32 46 35 31 100 71 42 30.09 30.06 30.00 10 6 0 15 4 18 0.00 Fog
25 67 52 36 47 42 35 96 69 42 30.05 29.97 29.89 10 10 8 15 6 21 0.00  
26 65 55 44 57 51 44 100 82 63 29.89 29.81 29.72 10 8 2 31 14 37 0.08 Rain
27 67 58 48 55 53 48 100 87 73 29.95 29.88 29.81 10 9 6 15 7 21 0.00  
28 81 67 52 57 53 46 100 66 32 29.89 29.85 29.78 10 8 2 12 4 20 0.00  
29 71 61 50 53 42 36 100 65 29 30.08 29.89 29.76 10 10 5 47 22 59 T  
30 66 51 35 44 37 27 92 59 25 30.27 30.19 30.09 10 10 10 22 12 30 0.00