Weather History for Mason City, IA

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 99 °F 78 °F 62 °F
Mean Temperature 83 °F 65 °F 54 °F
Min Temperature 68 °F 52 °F 38 °F
Degree Days  
Heating Degree Days (base 65) 11 4 0 120
Cooling Degree Days (base 65) 18 4 0 120
Growing Degree Days (base 50) 32 15 2 439
Dew Point  
Dew Point 75 °F 55 °F 38 °F
Precipitation  
Precipitation 0.40 in 0.04 in 0.00 in 1.15 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 9 mph 0 mph
Gust Wind 45 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 29.98 in 29.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 16, 2013 Rise Set
Actual Time 6:54 AM CDT 7:21 PM CDT
Civil Twilight 6:25 AM CDT 7:49 PM CDT
Nautical Twilight 5:52 AM CDT 8:23 PM CDT
Astronomical Twilight 5:17 AM CDT 8:57 PM CDT
Moon 5:33 PM CDT (9/16) 3:37 AM CDT (9/16)
Length of Visible Light 13h 23m
Length of Day
12h 26m
Waxing Gibbous, 90% of the Moon is Illuminated
Sep 16
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Weather History Calendar

Precipitation Actual month total 1.15 Normal Month Total: 3.27
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Partly Cloudy
Actual:
79 | 61 0.00
Average:
78 | 55 0.12
Scattered Clouds
Actual:
72 | 46 0.00
Average:
78 | 54 0.11
Fog
Actual:
77 | 42 0.00
Average:
78 | 54 0.11
Clear
Actual:
88 | 54 0.00
Average:
78 | 54 0.11
Clear
Actual:
88 | 61 0.00
Average:
77 | 53 0.12
Scattered Clouds
Actual:
89 | 65 0.00
Average:
77 | 53 0.12
Thunderstorm
Actual:
91 | 65 T
Average:
77 | 53 0.12
Partly Cloudy
Actual:
78 | 68 0.00
Average:
76 | 52 0.11
Fog
Actual:
99 | 67 0.00
Average:
76 | 52 0.11
Scattered Clouds
Actual:
89 | 63 0.00
Average:
76 | 51 0.12
Scattered Clouds
Actual:
86 | 61 0.00
Average:
75 | 51 0.11
Scattered Clouds
Actual:
77 | 48 0.00
Average:
75 | 50 0.11
Clear
Actual:
70 | 40 0.00
Average:
75 | 50 0.11
Thunderstorm
Actual:
76 | 41 0.40
Average:
74 | 49 0.10
Rain
Actual:
65 | 51 0.26
Average:
74 | 49 0.11
Partly Cloudy
Actual:
67 | 41 0.00
Average:
73 | 48 0.11
Rain
Actual:
62 | 46 0.07
Average:
73 | 48 0.10
Thunderstorm
Actual:
86 | 62 0.29
Average:
73 | 47 0.11
Rain
Actual:
83 | 61 0.08
Average:
72 | 47 0.11
Rain
Actual:
64 | 44 T
Average:
72 | 46 0.11
Clear
Actual:
68 | 40 0.00
Average:
71 | 46 0.11
Clear
Actual:
76 | 40 0.00
Average:
71 | 46 0.11
Clear
Actual:
75 | 49 0.00
Average:
70 | 45 0.10
Scattered Clouds
Actual:
76 | 47 T
Average:
70 | 45 0.11
Fog
Actual:
75 | 41 0.00
Average:
70 | 44 0.10
Clear
Actual:
83 | 53 0.00
Average:
69 | 44 0.11
Scattered Clouds
Actual:
86 | 62 0.00
Average:
69 | 43 0.10
Rain
Actual:
69 | 41 0.05
Average:
68 | 43 0.10
Clear
Actual:
76 | 38 0.00
Average:
68 | 42 0.10
Clear
Actual:
77 | 48 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

2013 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 79 70 61 69 62 58 100 77 54 29.96 29.86 29.73 10 10 9 25 13 31 0.00  
2 72 59 46 58 53 47 100 75 49 30.10 30.05 29.98 10 9 1 16 8 21 0.00  
3 77 60 42 59 49 43 100 72 43 30.14 30.09 30.04 10 5 0 10 3 14 0.00 Fog
4 88 71 54 68 61 54 100 70 40 30.13 30.10 30.06 10 10 10 16 5 20 0.00  
5 88 75 61 70 66 61 100 73 46 30.19 30.15 30.12 10 10 6 9 5 17 0.00  
6 89 77 65 67 64 62 100 71 41 30.16 30.04 29.91 10 8 3 20 10 28 0.00  
7 91 78 65 75 67 61 100 78 55 29.97 29.91 29.88 10 9 6 12 4 13 T Thunderstorm
8 78 73 68 70 67 66 97 86 74 30.03 29.95 29.88 10 9 4 17 10 24 0.00  
9 99 83 67 72 67 59 100 65 29 29.89 29.80 29.70 10 6 0 26 12 36 0.00 Fog
10 89 76 63 68 64 62 93 69 45 30.00 29.91 29.80 10 10 8 15 6 18 0.00  
11 86 74 61 67 61 55 93 65 37 30.08 30.05 30.01 10 10 10 15 6 20 0.00  
12 77 63 48 57 49 45 90 63 35 30.22 30.16 30.06 10 10 10 22 11 29 0.00  
13 70 55 40 47 42 38 93 63 32 30.29 30.21 30.14 10 10 10 9 4 13 0.00  
14 76 59 41 55 46 41 96 65 33 30.13 30.02 29.87 10 9 2 20 9 25 0.40 Rain , Thunderstorm
15 65 58 51 56 54 50 100 84 67 30.28 30.04 29.84 10 9 1 22 10 28 0.26 Rain
16 67 54 41 52 48 42 100 78 56 30.40 30.34 30.28 10 8 1 12 5 17 0.00  
17 62 54 46 61 54 45 100 93 86 30.29 30.13 29.99 10 4 1 18 12 24 0.07 Rain
18 86 74 62 72 66 61 100 79 57 30.00 29.87 29.72 10 6 2 22 12 26 0.29 Rain , Thunderstorm
19 83 72 61 69 66 57 93 76 58 29.83 29.75 29.70 10 10 5 23 11 31 0.08 Rain
20 64 54 44 54 50 43 93 77 60 29.98 29.93 29.85 10 10 10 22 13 29 T Rain
21 68 54 40 48 45 40 100 73 45 30.03 29.98 29.92 10 10 9 15 6 21 0.00  
22 76 58 40 54 49 40 100 72 43 29.99 29.94 29.88 10 10 10 20 10 25 0.00  
23 75 62 49 52 50 47 93 67 41 29.98 29.93 29.88 10 10 10 23 12 30 0.00  
24 76 62 47 53 50 46 96 71 46 29.95 29.93 29.90 10 10 9 17 7 22 T  
25 75 58 41 54 48 42 100 73 46 29.99 29.95 29.87 10 5 0 16 7 20 0.00 Fog
26 83 68 53 61 56 50 93 69 45 29.94 29.91 29.86 10 10 6 26 14 33 0.00  
27 86 74 62 63 60 59 90 65 40 29.96 29.91 29.85 10 10 7 30 16 38 0.00  
28 69 55 41 63 55 42 100 82 64 30.03 29.85 29.73 10 10 9 30 12 45 0.05 Rain
29 76 57 38 47 43 38 100 65 29 30.05 29.98 29.90 10 10 10 23 10 30 0.00  
30 77 63 48 51 48 45 93 65 36 29.89 29.78 29.69 10 10 10 30 15 36 0.00