Round Lake Beach, Illinois Weather Forecast
Today in Round Lake Beach: overcast with a high near 65°F and a low around 54°F. Rain chance 42%. Best chance of rain is Thursday at 83%. Cooling trend: highs fall from 65°F today to 57°F by Saturday.
Forecast updated 11:05 AM CDT, Oct 14
Active Weather Alerts
7-Day Forecast for Round Lake Beach
Today 10/14
65°/54°
42%
Thu 10/15
61°/54°
83%
Fri 10/16
57°/42°
83%
Sat 10/17
57°/35°
1%
Sun 10/18
63°/40°
1%
Mon 10/19
66°/43°
1%
Tue 10/20
68°/44°
1%
Next 24 Hours
| Now | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | Thu12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky | | | | | | |  | | |  | | | | | | | | | | | | | | |
| Temp | 65° | 65° | 65° | 64° | 62° | 61° | 61° | 60° | 58° | 56° | 55° | 55° | 54° | 54° | 55° | 55° | 55° | 55° | 55° | 55° | 55° | 55° | 57° | 59° |
| Rain | 1% | 1% | 1% | 1% | 3% | 0% | 0% | 0% | 1% | 0% | 0% | 0% | 0% | 1% | 2% | 3% | 6% | 8% | 18% | 28% | 31% | 33% | 46% | 35% |
| Wind | NE 7 | NE 7 | NE 8 | NE 8 | NE 9 | NE 9 | NE 8 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 5 | NE 5 | ENE 5 | ENE 5 | ENE 5 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | ESE 8 |
Growing Conditions
Growing degree days
3,238
since Apr 1, base 50°F
Rain, last 30 days
10.22 in
model analysis
Rain, year to date
38.55 in
since Jan 1
2-inch soil temperature
71°F
yesterday, daily average
Reference ET, last 7 days
0.93 in
FAO-56 grass reference
Through Oct 13. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Round Lake Beach →
Current Stats & Observations
NWS Forecast
About Round Lake Beach Weather
Round Lake Beach sits at about 810 feet above sea level in Lake County, Illinois. About 279,381 people live in the Round Lake Beach area. Official forecasts and warnings for the area come from the National Weather Service LOT office, and the nearest NEXRAD radar site is KMKX. The city is in USDA plant hardiness zone 5b, where the coldest winter night typically falls between -15 to -10°F. Over the past ten years the last spring freeze has come around Apr 26 and the first fall freeze around Nov 3.
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