Weather History for Johnstown, PA

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Month of May, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 84 °F 68 °F 45 °F
Mean Temperature 76 °F 59 °F 40 °F
Min Temperature 69 °F 52 °F 34 °F
Degree Days  
Heating Degree Days (base 65) 25 7 0 214
Cooling Degree Days (base 65) 11 1 0 38
Growing Degree Days (base 50) 26 10 0 306
Dew Point  
Dew Point 67 °F 50 °F 23 °F
Precipitation  
Precipitation 0.75 in 0.13 in 0.00 in 4.07 in
Snowdepth - - - -
Wind  
Wind 24 mph 7 mph 0 mph
Gust Wind 45 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.28 in 29.96 in 29.54 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 18, 2011 Rise Set
Actual Time 5:56 AM EDT 8:27 PM EDT
Civil Twilight 5:25 AM EDT 8:58 PM EDT
Nautical Twilight 4:47 AM EDT 9:37 PM EDT
Astronomical Twilight 4:04 AM EDT 10:20 PM EDT
Moon 10:11 PM EDT (5/18) 6:40 AM EDT (5/18)
Length of Visible Light 15h 32m
Length of Day
14h 30m
Full, 98% of the Moon is Illuminated
May 18
Full
May 24
Last Quarter
Jun 1
New
Jun 8
First Quarter
Jun 15
Full

Weather History Calendar

Precipitation Actual month total 4.07 Average Month Total: 4.38
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
53 | 48 0.15
Average:
69 | 44 0.12
Rain
Actual:
71 | 50 0.02
Average:
69 | 44 0.10
Rain
Actual:
72 | 39 0.34
Average:
68 | 43 0.22
Rain
Actual:
45 | 37 0.02
Average:
66 | 42 0.09
Scattered Clouds
Actual:
57 | 34 0.00
Average:
66 | 43 0.14
Partly Cloudy
Actual:
61 | 41 0.00
Average:
70 | 45 0.16
Thunderstorm
Actual:
62 | 42 0.07
Average:
69 | 43 0.13
Partly Cloudy
Actual:
63 | 46 0.00
Average:
72 | 43 0.09
Clear
Actual:
64 | 42 0.00
Average:
71 | 45 0.18
Scattered Clouds
Actual:
69 | 42 0.00
Average:
70 | 45 0.11
Scattered Clouds
Actual:
72 | 52 0.00
Average:
72 | 46 0.13
Rain
Actual:
75 | 53 0.00
Average:
72 | 48 0.21
Thunderstorm
Actual:
73 | 57 0.00
Average:
72 | 47 0.15
Rain
Actual:
64 | 57 0.00
Average:
72 | 48 0.14
Rain
Actual:
63 | 55 0.39
Average:
72 | 48 0.20
Rain
Actual:
57 | 51 0.02
Average:
72 | 48 0.06
Rain
Actual:
57 | 50 0.55
Average:
75 | 48 0.14
Thunderstorm
Actual:
62 | 51 0.75
Average:
72 | 49 0.18
Rain
Actual:
60 | 48 0.12
Average:
73 | 50 0.26
Rain
Actual:
61 | 50 0.01
Average:
75 | 52 0.20
Fog
Actual:
72 | 48 0.00
Average:
76 | 51 0.11
Rain
Actual:
73 | 57 0.04
Average:
76 | 49 0.10
Thunderstorm
Actual:
75 | 60 0.09
Average:
77 | 50 0.07
Thunderstorm
Actual:
70 | 59 0.34
Average:
76 | 51 0.23
Thunderstorm
Actual:
77 | 59 0.46
Average:
76 | 52 0.10
Thunderstorm
Actual:
80 | 60 0.19
Average:
76 | 52 0.11
Thunderstorm
Actual:
71 | 57 0.50
Average:
74 | 49 0.05
Rain
Actual:
77 | 57 0.01
Average:
75 | 50 0.17
Scattered Clouds
Actual:
82 | 64 0.00
Average:
78 | 52 0.16
Clear
Actual:
84 | 69 0.00
Average:
78 | 54 0.10
Rain
Actual:
84 | 68 0.00
Average:
78 | 54 0.17
 

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
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 53 50 48 49 43 28 100 79 40 30.22 30.19 30.15 10 8 2 16 10 23 0.15 Rain
2 71 60 50 59 53 48 96 80 55 30.15 30.12 30.06 10 8 2 15 7 23 0.02 Rain
3 72 55 39 57 51 37 100 89 53 30.09 30.00 29.92 10 6 2 23 8 34 0.34 Rain
4 45 40 37 38 35 30 100 85 67 30.25 30.13 30.06 10 9 1 20 12 26 0.02 Rain
5 57 46 34 31 27 24 79 50 30 30.25 30.16 30.05 10 10 10 24 12 36 0.00  
6 61 50 41 41 30 23 89 47 28 30.04 29.93 29.84 10 10 10 14 6 25 0.00  
7 62 51 42 45 41 36 93 75 41 29.96 29.93 29.88 10 9 2 22 9 38 0.07 Rain , Thunderstorm
8 63 54 46 44 40 33 89 63 42 30.01 29.96 29.91 10 10 10 15 5 17 0.00  
9 64 53 42 38 32 26 76 46 24 30.09 30.03 30.01 10 10 10 9 6 17 0.00  
10 69 55 42 34 30 26 61 39 21 30.07 30.01 29.96 10 10 10 9 5 - 0.00  
11 72 62 52 41 36 31 54 38 24 30.04 30.01 29.95 10 10 10 13 5 - 0.00  
12 75 64 53 58 48 41 86 57 34 30.04 29.98 29.89 10 10 3 10 6 - 0.00 Rain
13 73 64 57 61 58 55 100 87 68 29.90 29.83 29.75 10 6 2 14 7 - 0.00 Rain , Thunderstorm
14 64 60 57 61 58 57 100 93 77 29.76 29.70 29.62 10 6 0 13 8 17 0.00 Fog , Rain
15 63 58 55 57 56 50 100 93 77 29.62 29.58 29.54 10 7 0 13 6 24 0.39 Fog , Rain
16 57 54 51 52 51 50 100 89 78 29.80 29.71 29.60 10 9 4 9 6 - 0.02 Rain
17 57 54 50 55 53 50 100 97 90 29.79 29.75 29.71 10 4 0 15 9 23 0.55 Fog , Rain
18 62 56 51 55 52 46 100 90 67 29.90 29.83 29.77 10 7 0 12 7 23 0.75 Fog , Rain , Thunderstorm
19 60 54 48 52 49 46 100 92 62 30.07 29.98 29.89 10 6 0 9 5 - 0.12 Fog , Rain
20 61 56 50 52 50 48 96 85 70 30.07 30.05 30.01 10 7 4 10 7 22 0.01 Rain
21 72 60 48 55 52 48 100 79 48 30.10 30.05 30.02 10 8 0 10 6 - 0.00 Fog
22 73 65 57 62 58 51 94 77 61 30.06 30.01 29.95 10 9 3 10 5 17 0.04 Rain
23 75 66 60 63 59 53 100 79 48 30.01 29.91 29.82 10 8 2 21 9 32 0.09 Rain , Thunderstorm
24 70 64 59 61 57 52 100 79 63 29.96 29.89 29.80 10 9 2 22 12 45 0.34 Rain , Thunderstorm
25 77 67 59 61 59 57 100 89 55 30.00 29.94 29.83 10 5 0 15 3 22 0.46 Fog , Rain , Thunderstorm
26 80 70 60 61 57 53 94 70 40 29.95 29.84 29.78 10 10 6 18 10 32 0.19 Rain , Thunderstorm
27 71 63 57 61 58 55 97 87 68 29.99 29.94 29.82 10 9 1 14 7 20 0.50 Rain , Thunderstorm
28 77 66 57 62 58 51 100 80 43 30.01 29.97 29.91 10 10 10 15 6 22 0.01 Rain
29 82 73 64 62 60 57 90 65 45 30.12 30.06 29.99 10 10 10 13 7 18 0.00  
30 84 76 69 65 63 61 78 65 49 30.23 30.17 30.08 10 10 9 14 8 21 0.00  
31 84 76 68 67 65 63 87 69 49 30.28 30.23 30.20 10 8 5 10 6 - 0.00 Rain