Weather in Old Kaskaskia, IL
Old Kaskaskia, Sunday, 9 August, 00:56
Clear. Feels like 76°. High 97°, low 72°.
Monthly outlook for Old Kaskaskia, IL: average high 89.6°, average low 70.5°. That is 1.8° above the climate normal for August. Precipitation is expected on 9 days (about 3.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 11 August (105°), the coolest 21 August (60.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.8° | 86.4° | +2.4° |
| 19 August – 28 August | 87.6° | 86.6° | +0.5° |
| 29 August – 7 September | at normal | 84.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — St. Mary (5 mi).
0
Old Kaskaskia, Monday, 10 August
Partly cloudy. High 102°, low 77°.
0
Old Kaskaskia, Tuesday, 11 August
Mostly clear. High 105°, low 79°.
0.12
Old Kaskaskia, Wednesday, 12 August
Light rain. High 96°, low 75°.
2.28Old Kaskaskia, Thursday, 13 August
Heavy rain. High 88°, low 72°.
0.13Old Kaskaskia, Friday, 14 August
Rain. High 81°, low 72°.
0.19Old Kaskaskia, Saturday, 15 August
Light rain. High 81°, low 68°.
0.06Old Kaskaskia, Sunday, 16 August
Light rain. High 89°, low 68°.
0.28Old Kaskaskia, Monday, 17 August
Rain. High 89°, low 71°.
0.08Old Kaskaskia, Tuesday, 18 August
Light rain. High 80°, low 71°.
0
Old Kaskaskia, Wednesday, 19 August
Overcast. High 91°, low 69°.
0
Old Kaskaskia, Thursday, 20 August
Clear. High 79°, low 62°.
0.11Old Kaskaskia, Friday, 21 August
Light rain. High 77°, low 61°.
0.09Old Kaskaskia, Saturday, 22 August
Light rain. High 99°, low 64°.
0.01Old Kaskaskia, Sunday, 23 August
Light rain. High 99°, low 72°.
0.02Old Kaskaskia, Monday, 24 August
Light rain. High 82°, low 75°.
0.04Old Kaskaskia, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Old Kaskaskia, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12Old Kaskaskia, Thursday, 27 August
Climate normal for this date — 60-year average.
0.09
Old Kaskaskia, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Old Kaskaskia, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13Old Kaskaskia, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Old Kaskaskia, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Old Kaskaskia, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Old Kaskaskia, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Old Kaskaskia, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13Old Kaskaskia, Friday, 4 September
Climate normal for this date — 60-year average.
0.13Old Kaskaskia, Saturday, 5 September
Climate normal for this date — 60-year average.
0.03Old Kaskaskia, Sunday, 6 September
Climate normal for this date — 60-year average.
0.05Old Kaskaskia, 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 Old Kaskaskia, 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 Old Kaskaskia, 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
70°Weather in Annapolis, MD77°Weather in Atlanta, GA74°Weather in Augusta, ME69°Weather in Austin, TX82°Weather in Baton Rouge, LA78°Weather in Bismarck, ND70°Weather in Boise, ID76°Weather in Boston, MA73°Weather in Carson City, NV80°Weather in Charleston, WV74°Weather in Charlotte Amalie, VI81°Weather in Cheyenne, WY76°Weather in Columbia, SC75°Weather in Columbus, OH72°Weather in Concord, NH70°Weather in Denver, CO79°Weather in Des Moines, IA73°Weather in Dover, DE77°Weather in Frankfort, KY74°Weather in Harrisburg, PA73°Weather in Hartford, CT71°Weather in Helena, MT68°Weather in Honolulu, HI78°Weather in Indianapolis, IN74°Weather in Jackson, MS78°Weather in Jefferson City, MO79°Weather in Juneau, AK49°Weather in Lansing, MI64°Weather in Lincoln, NE80°Weather in Little Rock, AR75°Weather in Madison, WI65°Weather in Montgomery, AL78°Weather in Montpelier, VT64°Weather in Nashville, TN70°Weather in Oklahoma City, OK85°Weather in Olympia, WA62°Weather in Phoenix, AZ95°Weather in Pierre, SD78°Weather in Providence, RI73°Weather in Raleigh, NC75°Weather in Richmond, VA78°Weather in Sacramento, CA74°Weather in Salem, OR68°Weather in Salt Lake City, UT80°Weather in San Juan, PR82°Weather in Santa Fe, NM75°Weather in Springfield, IL73°Weather in St. Paul, MN69°Weather in Tallahassee, FL76°Weather in Topeka, KS78°Weather in Trenton, NJ74°Weather in Washington, DC77°74°Weather in Gilletts, IL65°Weather in Gillum, IL68°Weather in Gilmer, IL64°Weather in Gilmore, IL72°Weather in Glenarm, IL73°Weather in Glendale, IL73°Weather in Goodrich, IL64°Weather in Gordon, IL74°Weather in Goeselville, IL67°Weather in Grantsburg, IL74°Weather in Grape Creek, IL71°Weather in Graymont, IL67°Weather in Green Acres, IL73°Weather in Green Creek, IL75°Weather in Green River, IL66°Weather in Greenbush, IL66°Weather in Greenwich, IL64°Weather in Grimsby, IL75°Weather in Gross Point, IL68°