Weather in Jerseyville, IL
Jerseyville, Sunday, 9 August, 00:20
Clear. Feels like 75°. High 95°, low 72°.
Monthly outlook for Jerseyville, IL: average high 82.9°, average low 67.1°. That is 0.7° below the climate normal for August. Precipitation is expected on 9 days (about 3.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 11 August (98.4°), the coolest 21 August (54.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 84.6° | 84.2° | +0.2° |
| 19 August – 28 August | 80° | 84.4° | -2.4° |
| 29 August – 7 September | at normal | 82.3° | — |
August records over 66 years
0.03
Jerseyville, Monday, 10 August
Light rain. High 97°, low 74°.
0.07Jerseyville, Tuesday, 11 August
Light rain. High 98°, low 73°.
0.12Jerseyville, Wednesday, 12 August
Light rain. High 85°, low 73°.
1.68Jerseyville, Thursday, 13 August
Heavy rain. High 83°, low 66°.
0.48Jerseyville, Friday, 14 August
Rain. High 75°, low 66°.
0.26Jerseyville, Saturday, 15 August
Light rain. High 75°, low 67°.
0.15Jerseyville, Sunday, 16 August
Light rain. High 77°, low 65°.
0.23Jerseyville, Monday, 17 August
Light rain. High 80°, low 67°.
0.05Jerseyville, Tuesday, 18 August
Light rain. High 81°, low 67°.
0
Jerseyville, Wednesday, 19 August
Overcast. High 82°, low 68°.
0
Jerseyville, Thursday, 20 August
Partly cloudy. High 74°, low 57°.
0.01Jerseyville, Friday, 21 August
Light rain. High 72°, low 55°.
0.17Jerseyville, Saturday, 22 August
Light rain. High 83°, low 62°.
0
Jerseyville, Sunday, 23 August
Clear. High 89°, low 69°.
0Jerseyville, Monday, 24 August
Overcast. High 80°, low 71°.
0.06Jerseyville, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.12Jerseyville, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Jerseyville, Thursday, 27 August
Climate normal for this date — 60-year average.
0.09Jerseyville, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Jerseyville, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Jerseyville, Sunday, 30 August
Climate normal for this date — 60-year average.
0.1Jerseyville, Monday, 31 August
Climate normal for this date — 60-year average.
0.13Jerseyville, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13
Jerseyville, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.07Jerseyville, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Jerseyville, Friday, 4 September
Climate normal for this date — 60-year average.
0.04
Jerseyville, Saturday, 5 September
Climate normal for this date — 60-year average.
0.05Jerseyville, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Jerseyville, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Jerseyville, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Jerseyville, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
69°Weather in Annapolis, MD76°Weather in Atlanta, GA
74°Weather in Augusta, ME70°Weather in Austin, TX84°Weather in Baton Rouge, LA79°Weather in Bismarck, ND71°Weather in Boise, ID80°Weather in Boston, MA74°Weather in Carson City, NV84°Weather in Charleston, WV74°Weather in Charlotte Amalie, VI81°Weather in Cheyenne, WY77°Weather in Columbia, SC76°Weather in Columbus, OH73°Weather in Concord, NH71°Weather in Denver, CO81°Weather in Des Moines, IA73°Weather in Dover, DE77°Weather in Frankfort, KY76°Weather in Harrisburg, PA74°Weather in Hartford, CT71°Weather in Helena, MT73°Weather in Honolulu, HI78°Weather in Indianapolis, IN74°Weather in Jackson, MS79°Weather in Jefferson City, MO79°Weather in Juneau, AK49°Weather in Lansing, MI65°Weather in Lincoln, NE79°Weather in Little Rock, AR75°Weather in Madison, WI66°Weather in Montgomery, AL79°Weather in Montpelier, VT64°Weather in Nashville, TN72°Weather in Oklahoma City, OK87°Weather in Olympia, WA67°Weather in Phoenix, AZ96°Weather in Pierre, SD78°Weather in Providence, RI73°Weather in Raleigh, NC76°Weather in Richmond, VA79°Weather in Sacramento, CA82°Weather in Salem, OR72°Weather in Salt Lake City, UT85°Weather in San Juan, PR83°Weather in Santa Fe, NM75°Weather in Springfield, IL75°Weather in St. Paul, MN70°Weather in Tallahassee, FL76°Weather in Topeka, KS79°Weather in Trenton, NJ75°Weather in Washington, DC77°69°Weather in Hanover Park, IL67°Weather in Harwood Heights, IL70°Weather in Justice, IL69°Weather in Kenilworth, IL69°Weather in La Grange, IL69°Weather in La Grange Park, IL69°Weather in Lansing, IL67°Weather in Lemont, IL67°Weather in Lincolnwood, IL71°Weather in Hazel Crest, IL67°Weather in Hillside, IL69°Weather in Hodgkins, IL69°Weather in Hoffman Estates, IL67°Weather in Homewood, IL67°Weather in Indian Head Park, IL68°Weather in Inverness, IL66°Weather in Crestwood, IL69°Weather in Dixmoor, IL68°Weather in Dolton, IL67°