Weather History for St. Louis, MO

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 84 °F 68 °F
Mean Temperature 85 °F 73 °F 61 °F
Min Temperature 76 °F 63 °F 52 °F
Degree Days  
Heating Degree Days (base 65) 4 0 0 8
Cooling Degree Days (base 65) 20 9 0 269
Growing Degree Days (base 50) 35 23 10 707
Dew Point  
Dew Point 71 °F 54 °F 31 °F
Precipitation  
Precipitation 0.82 in 0.06 in 0.00 in 1.70 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 8 mph 0 mph
Gust Wind 43 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.20 in 29.94 in 29.57 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 14, 2012 Rise Set
Actual Time 5:49 AM CDT 8:06 PM CDT
Civil Twilight 5:19 AM CDT 8:36 PM CDT
Nautical Twilight 4:43 AM CDT 9:13 PM CDT
Astronomical Twilight 4:02 AM CDT 9:53 PM CDT
Moon 2:20 AM CDT (5/14) 2:30 PM CDT (5/14)
Length of Visible Light 15h 16m
Length of Day
14h 16m
Waning Crescent, 32% of the Moon is Illuminated
May 14
Waning Crescent
May 20
New
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.70 Normal Month Total: 4.72
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
85 | 60 0.57
Average:
72 | 53 0.13
Scattered Clouds
Actual:
90 | 72 0.00
Average:
73 | 53 0.14
Partly Cloudy
Actual:
87 | 70 0.00
Average:
73 | 53 0.15
Thunderstorm
Actual:
86 | 67 0.10
Average:
73 | 54 0.15
Thunderstorm
Actual:
92 | 71 0.00
Average:
73 | 54 0.14
Thunderstorm
Actual:
92 | 72 0.01
Average:
74 | 54 0.15
Thunderstorm
Actual:
76 | 62 0.82
Average:
74 | 54 0.14
Partly Cloudy
Actual:
75 | 56 0.00
Average:
74 | 55 0.15
Scattered Clouds
Actual:
71 | 53 0.00
Average:
74 | 55 0.14
Scattered Clouds
Actual:
76 | 52 0.00
Average:
75 | 55 0.14
Partly Cloudy
Actual:
76 | 54 0.00
Average:
75 | 56 0.16
Partly Cloudy
Actual:
80 | 59 0.00
Average:
75 | 56 0.15
Scattered Clouds
Actual:
77 | 56 0.00
Average:
75 | 56 0.15
Scattered Clouds
Actual:
80 | 54 0.00
Average:
76 | 57 0.15
Scattered Clouds
Actual:
83 | 55 0.00
Average:
76 | 57 0.16
Scattered Clouds
Actual:
78 | 61 0.00
Average:
76 | 57 0.15
Scattered Clouds
Actual:
80 | 53 0.00
Average:
77 | 58 0.15
Scattered Clouds
Actual:
87 | 56 0.00
Average:
77 | 58 0.15
Partly Cloudy
Actual:
90 | 66 0.00
Average:
77 | 58 0.15
Thunderstorm
Actual:
91 | 69 0.10
Average:
77 | 58 0.15
Rain
Actual:
73 | 58 0.00
Average:
78 | 59 0.16
Scattered Clouds
Actual:
78 | 54 0.00
Average:
78 | 59 0.16
Partly Cloudy
Actual:
85 | 56 0.00
Average:
78 | 59 0.15
Partly Cloudy
Actual:
92 | 66 0.00
Average:
78 | 60 0.16
Partly Cloudy
Actual:
92 | 74 0.00
Average:
79 | 60 0.16
Partly Cloudy
Actual:
95 | 75 0.00
Average:
79 | 60 0.16
Partly Cloudy
Actual:
93 | 76 0.00
Average:
79 | 61 0.16
Partly Cloudy
Actual:
94 | 76 T
Average:
80 | 61 0.16
Thunderstorm
Actual:
89 | 71 T
Average:
80 | 61 0.17
Partly Cloudy
Actual:
83 | 66 T
Average:
80 | 62 0.17
Rain
Actual:
68 | 53 0.10
Average:
81 | 62 0.16
 

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
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 85 73 60 64 61 58 93 70 47 29.96 29.87 29.78 10 7 0 21 10 29 0.57 Rain , Thunderstorm
2 90 81 72 65 62 59 68 53 38 29.91 29.85 29.78 10 10 10 24 12 31 0.00  
3 87 79 70 67 65 63 78 65 51 29.99 29.91 29.86 10 10 10 22 9 29 0.00  
4 86 77 67 71 65 61 84 71 58 30.04 29.91 29.82 10 10 5 23 6 33 0.10 Rain , Thunderstorm
5 92 82 71 71 68 65 90 67 44 29.90 29.85 29.82 10 10 7 10 5 15 0.00 Thunderstorm
6 92 82 72 70 67 64 87 66 44 29.88 29.83 29.77 10 10 6 12 7 21 0.01 Rain , Thunderstorm
7 76 69 62 66 63 59 93 79 64 29.92 29.87 29.79 10 8 3 18 8 24 0.82 Rain , Thunderstorm
8 75 66 56 57 47 41 84 58 31 30.00 29.96 29.91 10 10 10 18 8 25 0.00  
9 71 62 53 48 46 45 77 59 40 30.01 29.97 29.93 10 10 10 17 7 22 0.00  
10 76 64 52 50 46 42 83 59 35 30.02 29.98 29.95 10 10 10 12 4 14 0.00  
11 76 65 54 50 45 41 67 51 35 30.13 30.09 30.01 10 10 10 21 6 40 0.00  
12 80 70 59 53 48 43 72 51 29 30.20 30.15 30.12 10 10 10 9 3 - 0.00  
13 77 67 56 53 48 41 80 56 31 30.19 30.13 30.07 10 10 10 15 7 22 0.00  
14 80 67 54 47 41 34 72 46 19 30.13 30.07 30.02 10 10 10 13 5 18 0.00  
15 83 69 55 49 46 41 72 48 23 30.06 30.00 29.95 10 10 10 16 6 21 0.00  
16 78 70 61 54 47 38 63 44 25 30.06 29.99 29.94 10 10 10 15 8 22 0.00  
17 80 67 53 44 39 31 50 38 25 30.09 30.04 29.98 10 10 10 14 6 20 0.00  
18 87 72 56 58 50 44 67 46 24 30.02 29.96 29.89 10 10 9 14 8 20 0.00  
19 90 78 66 61 59 56 73 54 34 30.03 29.96 29.92 10 10 10 17 9 25 0.00  
20 91 80 69 67 62 59 69 55 40 30.07 30.02 29.98 10 9 7 15 9 17 0.10 Rain , Thunderstorm
21 73 66 58 63 51 46 73 57 41 30.16 30.11 30.07 10 10 9 18 9 24 0.00 Rain
22 78 66 54 51 47 43 80 56 31 30.09 30.01 29.89 10 10 9 9 3 16 0.00  
23 85 71 56 50 48 44 67 48 28 29.89 29.80 29.70 10 10 10 20 10 23 0.00  
24 92 79 66 60 53 47 53 40 26 29.74 29.66 29.57 10 10 10 30 15 43 0.00  
25 92 83 74 68 65 60 64 54 44 29.96 29.89 29.75 10 10 9 17 9 22 0.00  
26 95 85 75 69 66 61 69 54 38 30.02 29.97 29.92 10 10 10 17 9 22 0.00  
27 93 85 76 64 61 59 60 46 32 29.99 29.91 29.83 10 10 10 17 9 24 0.00  
28 94 85 76 64 61 55 64 46 28 29.87 29.80 29.74 10 10 10 24 10 31 T  
29 89 80 71 70 57 51 57 43 29 29.90 29.84 29.76 10 10 9 20 6 26 T Rain , Thunderstorm
30 83 75 66 56 50 45 61 45 28 29.98 29.90 29.83 10 10 10 12 6 16 T  
31 68 61 53 59 52 45 93 69 45 29.89 29.81 29.75 10 8 4 20 10 24 0.10 Rain