Weather History for Alton, IL

Change the Weather History Date:

Month of June, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 104 °F 87 °F 68 °F
Mean Temperature 85 °F 73 °F 58 °F
Min Temperature 73 °F 60 °F 48 °F
Degree Days  
Heating Degree Days (base 65) 7 0 0 8
Cooling Degree Days (base 65) 20 9 0 264
Growing Degree Days (base 50) 35 23 8 704
Dew Point  
Dew Point 73 °F 57 °F 36 °F
Precipitation  
Precipitation 0.16 in 0.01 in 0.00 in 0.19 in
Snowdepth - - - -
Wind  
Wind 29 mph 4 mph 0 mph
Gust Wind 41 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.17 in 29.96 in 29.77 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jun. 15, 2012 Rise Set
Actual Time 5:34 AM CDT 8:27 PM CDT
Civil Twilight 5:02 AM CDT 8:59 PM CDT
Nautical Twilight 4:21 AM CDT 9:39 PM CDT
Astronomical Twilight 3:35 AM CDT 10:26 PM CDT
Moon 2:47 AM CDT (6/15) 5:08 PM CDT (6/15)
Length of Visible Light 15h 57m
Length of Day
14h 53m
Waning Crescent, 13% of the Moon is Illuminated
Jun 15
Waning Crescent
Jun 19
New
Jun 26
First Quarter
Jul 3
Full
Jul 10
Last Quarter

Weather History Calendar

Precipitation Actual month total 0.19 Average Month Total: 3.96
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
68 | 48 0.00
Average:
75 | 60 0.14
Partly Cloudy
Actual:
78 | 51 0.00
Average:
75 | 60 0.16
Scattered Clouds
Actual:
84 | 52 0.00
Average:
76 | 61 0.13
Thunderstorm
Actual:
88 | 61 0.00
Average:
76 | 61 0.13
Scattered Clouds
Actual:
81 | 57 0.00
Average:
77 | 62 0.13
Clear
Actual:
77 | 56 0.00
Average:
78 | 63 0.16
Scattered Clouds
Actual:
82 | 52 0.00
Average:
78 | 63 0.14
Clear
Actual:
85 | 54 0.00
Average:
79 | 63 0.15
Scattered Clouds
Actual:
89 | 55 0.00
Average:
79 | 64 0.15
Scattered Clouds
Actual:
87 | 64 0.00
Average:
79 | 64 0.16
Thunderstorm
Actual:
77 | 65 0.01
Average:
80 | 64 0.16
Scattered Clouds
Actual:
80 | 59 0.01
Average:
80 | 64 0.14
Clear
Actual:
81 | 54 0.00
Average:
80 | 64 0.13
Scattered Clouds
Actual:
86 | 55 0.00
Average:
80 | 64 0.12
Scattered Clouds
Actual:
91 | 59 0.00
Average:
81 | 64 0.13
Thunderstorm
Actual:
93 | 70 0.01
Average:
81 | 64 0.13
Thunderstorm
Actual:
88 | 68 0.16
Average:
81 | 64 0.12
Clear
Actual:
91 | 73 0.00
Average:
81 | 64 0.13
Clear
Actual:
91 | 73 0.00
Average:
82 | 65 0.13
Clear
Actual:
93 | 70 0.00
Average:
82 | 65 0.12
Scattered Clouds
Actual:
85 | 63 0.00
Average:
82 | 65 0.12
Scattered Clouds
Actual:
85 | 60 0.00
Average:
82 | 65 0.12
Scattered Clouds
Actual:
86 | 57 0.00
Average:
83 | 65 0.12
Scattered Clouds
Actual:
93 | 63 0.00
Average:
83 | 66 0.12
Scattered Clouds
Actual:
88 | 63 0.00
Average:
83 | 66 0.11
Clear
Actual:
85 | 55 0.00
Average:
83 | 66 0.12
Clear
Actual:
94 | 54 0.00
Average:
84 | 66 0.12
Clear
Actual:
104 | 65 0.00
Average:
84 | 67 0.12
Clear
Actual:
101 | 67 0.00
Average:
84 | 67 0.12
Thunderstorm
Actual:
99 | 72 0.00
Average:
85 | 67 0.13
 

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
Jun high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 68 58 48 50 45 36 93 76 30 29.95 29.90 29.86 10 10 10 16 8 25 0.00  
2 78 64 51 56 49 45 88 71 34 29.93 29.88 29.81 10 10 10 16 6 17 0.00  
3 84 67 52 63 55 48 97 75 30 29.93 29.87 29.83 10 10 5 12 1 - 0.00  
4 88 74 61 68 61 55 94 76 38 29.90 29.83 29.77 10 10 7 17 2 - 0.00 Thunderstorm
5 81 68 57 59 53 45 94 67 28 29.98 29.93 29.89 10 10 10 17 2 - 0.00  
6 77 66 56 54 48 39 83 61 27 30.09 30.02 29.97 10 10 5 12 3 - 0.00  
7 82 66 52 54 50 41 93 72 24 30.14 30.10 30.06 10 10 10 14 1 - 0.00  
8 85 69 54 55 52 43 92 70 23 30.12 30.06 29.96 10 10 10 12 1 - 0.00  
9 89 71 55 58 54 52 90 64 31 29.98 29.94 29.84 10 10 10 14 3 18 0.00  
10 87 75 64 66 59 52 80 61 40 29.93 29.90 29.85 10 10 10 20 8 24 0.00  
11 77 71 65 70 67 65 100 91 78 29.96 29.90 29.87 10 9 1 16 6 23 0.01 Rain , Thunderstorm
12 80 68 59 66 55 41 98 68 28 30.13 30.06 29.96 10 10 10 16 6 - 0.01  
13 81 67 54 56 51 46 88 68 30 30.17 30.11 30.04 10 10 10 14 2 - 0.00  
14 86 70 55 59 54 50 94 75 31 30.09 30.04 29.96 10 10 10 14 2 - 0.00  
15 91 75 59 64 59 52 91 68 26 30.06 30.03 29.97 10 10 7 17 4 - 0.00  
16 93 82 70 69 62 57 93 59 30 30.09 30.02 29.91 10 10 7 29 8 41 0.01 Rain , Thunderstorm
17 88 78 68 73 69 66 95 84 52 30.02 29.93 29.84 10 10 5 12 7 - 0.16 Rain , Thunderstorm
18 91 82 73 70 65 55 79 62 31 29.91 29.84 29.80 10 10 10 23 11 30 0.00  
19 91 82 73 70 63 56 78 58 36 30.01 29.96 29.91 10 10 10 23 11 30 0.00  
20 93 82 70 63 58 55 64 53 28 30.07 30.01 29.94 10 10 10 18 6 24 0.00  
21 85 74 63 66 63 54 90 69 42 30.02 30.00 29.96 10 10 10 16 6 21 0.00  
22 85 72 60 61 58 50 96 76 30 30.06 30.02 29.98 10 10 10 12 2 - 0.00  
23 86 72 57 61 56 45 95 71 23 30.05 30.00 29.96 10 10 7 8 1 - 0.00  
24 93 78 63 65 61 55 89 68 32 30.00 29.96 29.90 10 10 10 12 2 - 0.00  
25 88 76 63 66 60 39 86 63 24 29.98 29.93 29.88 10 10 10 18 4 20 0.00  
26 85 70 55 56 50 43 87 61 22 30.08 29.98 29.92 10 10 10 15 4 - 0.00  
27 94 74 54 55 51 46 87 59 20 30.02 29.93 29.87 10 10 10 16 5 - 0.00  
28 104 84 65 63 55 48 78 49 15 29.95 29.90 29.88 10 10 10 16 6 - 0.00  
29 101 84 67 71 62 55 82 62 22 29.94 29.87 29.79 10 10 10 9 1 - 0.00  
30 99 85 72 73 68 57 91 64 25 29.88 29.85 29.81 10 10 7 9 2 - 0.00 Thunderstorm