Day of Month | High | Low | Average | HDD | CDD | Precipitation | Snowfall |
1 | 56 | 38 | 47 | 18 | 0 | 0.11 | 0.0 |
2 | 55 | 38 | 47 | 18 | 0 | 0.10 | 0.0 |
3 | 55 | 38 | 46 | 19 | 0 | 0.10 | 0.0 |
4 | 54 | 37 | 46 | 19 | 0 | 0.11 | 0.0 |
5 | 54 | 37 | 45 | 20 | 0 | 0.10 | 0.0 |
6 | 53 | 37 | 45 | 20 | 0 | 0.10 | 0.0 |
7 | 53 | 36 | 44 | 21 | 0 | 0.10 | 0.1 |
8 | 52 | 36 | 44 | 21 | 0 | 0.10 | 0.0 |
9 | 52 | 35 | 44 | 21 | 0 | 0.10 | 0.0 |
10 | 51 | 35 | 43 | 22 | 0 | 0.10 | 0.0 |
11 | 51 | 35 | 43 | 22 | 0 | 0.10 | 0.0 |
12 | 50 | 34 | 42 | 23 | 0 | 0.10 | 0.0 |
13 | 50 | 34 | 42 | 23 | 0 | 0.11 | 0.1 |
14 | 49 | 33 | 41 | 24 | 0 | 0.12 | 0.0 |
15 | 49 | 33 | 41 | 24 | 0 | 0.11 | 0.0 |
16 | 48 | 32 | 40 | 25 | 0 | 0.10 | 0.0 |
17 | 47 | 32 | 40 | 25 | 0 | 0.11 | 0.1 |
18 | 47 | 32 | 39 | 26 | 0 | 0.11 | 0.0 |
19 | 46 | 31 | 39 | 26 | 0 | 0.11 | 0.0 |
20 | 46 | 31 | 38 | 27 | 0 | 0.11 | 0.1 |
21 | 45 | 30 | 38 | 27 | 0 | 0.10 | 0.0 |
22 | 45 | 30 | 37 | 28 | 0 | 0.11 | 0.1 |
23 | 44 | 29 | 37 | 28 | 0 | 0.11 | 0.1 |
24 | 44 | 29 | 36 | 29 | 0 | 0.11 | 0.0 |
25 | 43 | 28 | 36 | 29 | 0 | 0.10 | 0.1 |
26 | 43 | 28 | 35 | 30 | 0 | 0.10 | 0.1 |
27 | 42 | 27 | 35 | 30 | 0 | 0.11 | 0.1 |
28 | 41 | 27 | 34 | 31 | 0 | 0.10 | 0.1 |
29 | 41 | 26 | 34 | 31 | 0 | 0.11 | 0.1 |
30 | 40 | 26 | 33 | 32 | 0 | 0.10 | 0.1 |
MONTH | 48.2 | 32.4 | 40.3 | 741 | 0 | 3.15 | 1.2 |
HDD = A Heating Degree Day represents the number of degree(s) that the mean temperature for the day is below 65 degrees during a day.
CDD = A Cooling Degree Day represents the number of degree(s) that the mean temperature for the day is above 65 degrees during a day.
CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS
HOMETOWN WEATHER: Arlington Heights Weather Forecast -- Arlingtoncardinal.com/weather
LIVE RADAR | STORM TRACKS | CLOUDS INFRARED SAT | CLOUDS VISIBLE SAT (during daylight)
WunderMap® with Temperature/Wind Data || Google: O'Hare Temps | NE Illinois Temps
Full Screen Motion Weather Radar (Wunderground.com) Midwest Cloud Cover and Arlington Heights Weather Forecast
SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with azimuth & trajectory, times for dawn, sunrise, solar noon, sunset, dusk ...