Weather History for Frederick, MD

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 91 °F 80 °F 66 °F
Mean Temperature 82 °F 69 °F 56 °F
Min Temperature 73 °F 58 °F 39 °F
Degree Days  
Heating Degree Days (base 65) 9 1 0 39
Cooling Degree Days (base 65) 17 5 0 164
Growing Degree Days (base 50) 32 19 6 592
Dew Point  
Dew Point 75 °F 60 °F 36 °F
Precipitation  
Precipitation 0.18 in 0.01 in 0.00 in 0.40 in
Snowdepth - - - -
Wind  
Wind 34 mph 4 mph 0 mph
Gust Wind 40 mph 21 mph 12 mph
Sea Level Pressure  
Sea Level Pressure 30.33 in 30.03 in 29.65 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 12, 2012 Rise Set
Actual Time 5:58 AM EDT 8:14 PM EDT
Civil Twilight 5:28 AM EDT 8:44 PM EDT
Nautical Twilight 4:51 AM EDT 9:21 PM EDT
Astronomical Twilight 4:10 AM EDT 10:02 PM EDT
Moon 1:27 AM EDT (5/12) 12:33 PM EDT (5/12)
Length of Visible Light 15h 16m
Length of Day
14h 16m
Waning Gibbous, 53% of the Moon is Illuminated
May 12
Waning Gibbous
May 12
Last Quarter
May 20
New
May 28
First Quarter
Jun 4
Full

Weather History Calendar

 
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
82 | 53 0.02
Average:
- | - -
Thunderstorm
Actual:
78 | 55 0.00
Average:
- | - -
Partly Cloudy
Actual:
87 | 53 0.00
Average:
- | - -
Thunderstorm
Actual:
86 | 66 0.00
Average:
- | - -
Fog
Actual:
80 | 59 0.00
Average:
- | - -
Overcast
Actual:
73 | 60 0.00
Average:
- | - -
Overcast
Actual:
69 | 55 0.00
Average:
- | - -
Rain
Actual:
66 | 57 0.17
Average:
- | - -
Rain
Actual:
75 | 57 0.01
Average:
- | - -
Scattered Clouds
Actual:
66 | 50 0.00
Average:
- | - -
Clear
Actual:
73 | 39 0.00
Average:
- | - -
Clear
Actual:
82 | 42 0.00
Average:
- | - -
Scattered Clouds
Actual:
84 | 51 0.00
Average:
- | - -
Rain
Actual:
68 | 60 0.02
Average:
- | - -
Thunderstorm
Actual:
78 | 62 0.18
Average:
- | - -
Partly Cloudy
Actual:
84 | 59 0.00
Average:
- | - -
Clear
Actual:
73 | 46 0.00
Average:
- | - -
Clear
Actual:
78 | 41 0.00
Average:
- | - -
Clear
Actual:
84 | 48 0.00
Average:
- | - -
Scattered Clouds
Actual:
84 | 53 0.00
Average:
- | - -
Rain
Actual:
69 | 64 0.00
Average:
- | - -
Mostly Cloudy
Actual:
80 | 64 0.00
Average:
- | - -
Thunderstorm
Actual:
84 | 64 0.00
Average:
- | - -
Fog
Actual:
84 | 66 0.00
Average:
- | - -
Partly Cloudy
Actual:
87 | 69 0.00
Average:
- | - -
Scattered Clouds
Actual:
89 | 68 0.00
Average:
- | - -
Thunderstorm
Actual:
89 | 69 0.00
Average:
- | - -
Clear
Actual:
91 | 73 0.00
Average:
- | - -
Thunderstorm
Actual:
91 | 68 0.00
Average:
- | - -
Partly Cloudy
Actual:
89 | 64 0.00
Average:
- | - -
Clear
Actual:
84 | 60 0.00
Average:
- | - -
 

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 82 68 53 64 57 50 100 73 42 30.12 30.03 29.99 10 9 5 14 4 21 0.02 Rain , Thunderstorm
2 78 66 55 66 59 55 100 89 61 30.11 30.06 30.00 10 9 4 8 1 - 0.00 Rain , Thunderstorm
3 87 70 53 66 62 54 100 72 49 30.17 30.11 30.03 10 7 1 7 5 - 0.00  
4 86 76 66 70 65 61 100 65 45 30.03 29.97 29.89 10 8 4 17 4 25 0.00 Rain , Thunderstorm
5 80 70 59 66 62 59 100 88 58 30.03 29.94 29.90 10 7 0 12 3 16 0.00 Fog
6 73 66 60 61 60 57 94 87 65 30.11 30.05 30.01 10 8 5 8 2 - 0.00  
7 69 62 55 57 54 45 100 78 55 30.11 30.08 30.02 10 10 10 12 4 17 0.00  
8 66 62 57 66 57 43 100 85 52 30.03 29.92 29.81 10 8 2 16 7 25 0.17 Rain
9 75 66 57 64 62 55 100 92 61 29.82 29.77 29.68 10 7 2 9 4 - 0.01 Rain
10 66 58 50 55 46 37 100 72 42 29.98 29.77 29.65 10 10 4 22 7 31 0.00  
11 73 56 39 46 40 36 100 65 29 30.20 30.10 29.98 10 10 7 16 4 25 0.00  
12 82 62 42 52 46 43 100 78 28 30.33 30.26 30.21 10 10 7 9 2 - 0.00  
13 84 68 51 61 55 52 100 77 37 30.23 30.18 30.10 10 10 5 9 2 - 0.00  
14 68 64 60 64 61 57 100 95 68 30.14 30.10 30.05 10 7 1 9 3 - 0.02 Rain
15 78 70 62 66 63 63 100 91 57 30.05 29.98 29.94 10 8 3 8 1 - 0.18 Rain , Thunderstorm
16 84 72 59 63 60 54 100 80 35 29.97 29.94 29.87 10 7 2 10 3 - 0.00  
17 73 60 46 57 49 43 100 72 33 30.17 30.09 29.97 10 10 10 15 5 18 0.00  
18 78 60 41 52 46 41 100 78 32 30.23 30.18 30.14 10 9 1 8 1 - 0.00  
19 84 66 48 55 53 48 100 50 33 30.23 30.17 30.12 10 10 10 8 2 - 0.00  
20 84 68 53 59 56 52 100 54 33 30.23 30.19 30.14 10 10 10 14 5 20 0.00  
21 69 66 64 70 66 64 100 99 94 30.19 30.05 29.97 7 3 1 8 6 - 0.00 Rain
22 80 72 64 66 66 64 100 75 58 29.98 29.89 29.84 10 9 2 6 2 - 0.00  
23 84 74 64 70 67 64 100 81 58 29.97 29.93 29.90 10 8 5 13 1 21 0.00 Rain , Thunderstorm
24 84 75 66 70 67 64 100 71 54 30.11 30.08 30.03 10 8 1 9 4 16 0.00 Fog
25 87 78 69 72 70 70 100 67 55 30.17 30.14 30.11 10 9 4 7 4 - 0.00  
26 89 78 68 75 72 68 100 76 58 30.18 30.15 30.11 10 9 5 9 4 - 0.00  
27 89 79 69 72 70 64 100 70 52 30.19 30.13 30.06 10 10 2 34 6 - 0.00 Rain , Thunderstorm
28 91 82 73 73 71 70 88 62 52 30.09 30.02 29.95 10 10 10 12 4 - 0.00  
29 91 80 68 73 71 66 100 71 52 29.92 29.83 29.76 10 10 5 15 8 40 0.00 Rain , Thunderstorm
30 89 76 64 66 63 57 100 58 33 29.85 29.79 29.74 10 10 10 7 2 - 0.00  
31 84 72 60 61 54 52 88 46 33 29.91 29.89 29.86 10 10 10 9 3 - 0.00