Weather in Grafton, IL
Grafton, Thursday, 29 October, 11:44
Clear. Feels like 74°. High 77°, low 57°.
Monthly outlook for Grafton, IL: average high 62.4°, average low 50.6°. That is 3.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 29 October (76.7°), the coolest 7 November (35.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 65.6° | 58.4° | +4.1° |
| 8 November – 17 November | 56.9° | 53.6° | +1.9° |
| 18 November – 27 November | at normal | 50° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Jerseyville (11 mi).
0.04
Grafton, Friday, 30 October
Light rain. High 76°, low 60°.
0
Grafton, Saturday, 31 October
Overcast. High 66°, low 59°.
0.15Grafton, Sunday, 1 November
Rain. High 67°, low 58°.
0Grafton, Monday, 2 November
Overcast. High 67°, low 59°.
0Grafton, Tuesday, 3 November
Light rain. High 73°, low 63°.
0.67Grafton, Wednesday, 4 November
Rain. High 66°, low 60°.
0.1Grafton, Thursday, 5 November
Light rain. High 61°, low 52°.
0Grafton, Friday, 6 November
Overcast. High 51°, low 46°.
0
Grafton, Saturday, 7 November
Mostly clear. High 52°, low 35°.
0Grafton, Sunday, 8 November
Overcast. High 52°, low 37°.
0.12Grafton, Monday, 9 November
Light rain. High 47°, low 42°.
0Grafton, Tuesday, 10 November
Overcast. High 54°, low 40°.
0Grafton, Wednesday, 11 November
Clear. High 61°, low 40°.
0Grafton, Thursday, 12 November
Overcast. High 64°, low 47°.
0.01Grafton, Friday, 13 November
Light rain. High 64°, low 54°.
0.08
Grafton, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Grafton, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1Grafton, Monday, 16 November
Climate normal for this date — 60-year average.
0.13Grafton, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.16
Grafton, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Grafton, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11Grafton, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Grafton, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Grafton, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Grafton, Monday, 23 November
Climate normal for this date — 60-year average.
0.13Grafton, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13Grafton, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15Grafton, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Grafton, Friday, 27 November
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 Grafton, 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 Grafton, 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
59°Weather in Annapolis, MD66°Weather in Atlanta, GA68°Weather in Augusta, ME56°Weather in Austin, TX70°Weather in Baton Rouge, LA75°Weather in Bismarck, ND37°Weather in Boise, ID38°Weather in Boston, MA64°Weather in Carson City, NV47°Weather in Charleston, WV69°Weather in Charlotte Amalie, VI87°Weather in Cheyenne, WY47°Weather in Columbia, SC70°Weather in Columbus, OH69°Weather in Concord, NH61°Weather in Denver, CO51°Weather in Des Moines, IA59°Weather in Dover, DE66°Weather in Frankfort, KY70°Weather in Harrisburg, PA59°Weather in Hartford, CT62°Weather in Helena, MT33°Weather in Honolulu, HI75°Weather in Indianapolis, IN68°Weather in Jackson, MS70°Weather in Jefferson City, MO68°Weather in Juneau, AK19°Weather in Lansing, MI69°Weather in Lincoln, NE59°Weather in Little Rock, AR74°Weather in Madison, WI60°Weather in Montgomery, AL69°Weather in Montpelier, VT61°Weather in Nashville, TN68°Weather in Oklahoma City, OK71°Weather in Olympia, WA
41°Weather in Phoenix, AZ71°Weather in Pierre, SD41°Weather in Providence, RI64°Weather in Raleigh, NC69°Weather in Richmond, VA67°Weather in Sacramento, CA51°Weather in Salem, OR47°Weather in Salt Lake City, UT54°Weather in San Juan, PR89°Weather in Santa Fe, NM55°Weather in Springfield, IL72°Weather in St. Paul, MN49°Weather in Tallahassee, FL76°Weather in Topeka, KS67°Weather in Trenton, NJ63°Weather in Washington, DC67°65°Weather in Wauconda, IL64°Weather in Leaf River, IL63°Weather in Hillcrest, IL64°Weather in Creston, IL64°Weather in Davis Junction, IL63°Weather in Forreston, IL62°Weather in Monroe Center, IL63°Weather in Mount Morris, IL63°Weather in Stillman Valley, IL63°Weather in Milledgeville, IL63°Weather in Shannon, IL63°Weather in Thomson, IL64°Weather in Arlington Heights, IL66°Weather in Barrington, IL65°Weather in Barrington Hills, IL64°Weather in Bartlett, IL64°Weather in Bedford Park, IL68°Weather in Bellwood, IL67°Weather in Berkeley, IL66°