Arlington Heights, Illinois Weather Forecast
Today in Arlington Heights: clear skies with a high near 71°F and a low around 49°F. Rain chance 1%. No day tops a 20% rain chance through Thursday. Highs run 62 to 72°F through Thursday.
Forecast updated 3:05 AM CDT, Oct 23
Active Weather Alerts
7-Day Forecast for Arlington Heights
Today 10/23
71°49°
Sat 10/24
70°50°
Sun 10/25
72°53°
Mon 10/26
65°52°
Tue 10/27
62°50°
Wed 10/28
67°50°
Thu 10/29
12%
66°51°
Next 24 Hours
| Now | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | Sat12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  | | | | | | | | | | | |  | | | | | | | | | | | |
| Temp | 50° | 55° | 60° | 64° | 67° | 70° | 70° | 71° | 70° | 68° | 65° | 62° | 59° | 58° | 57° | 56° | 55° | 54° | 54° | 53° | 52° | 51° | 51° | 50° |
| Rain | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 1% | 1% | 1% |
| Wind | SSE 2 | S 2 | S 3 | S 3 | S 4 | SSE 4 | SSE 4 | SE 4 | ESE 5 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | SSE 3 | SSE 3 | SSE 3 | S 3 | SSE 3 | S 3 |
Growing Conditions
Growing degree days
3,433
since Apr 1, base 50°F
Rain, last 30 days
1.34 in
model analysis
Rain, year to date
46.65 in
since Jan 1
2-inch soil temperature
55°F
yesterday, daily average
Reference ET, last 7 days
0.65 in
FAO-56 grass reference
Through Oct 22. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Arlington Heights →
Current Stats & Observations
NWS Forecast
About Arlington Heights Weather
Arlington Heights sits at about 719 feet above sea level in Cook County, Illinois. About 74,760 people live in the Arlington Heights area. Official forecasts and warnings for the area come from the National Weather Service LOT office, and the nearest NEXRAD radar site is KLOT. The city is in USDA plant hardiness zone 6a, where the coldest winter night typically falls between -10 to -5°F. Over the past ten years the last spring freeze has come around Apr 26 and the first fall freeze around Oct 31.
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