Weather in Mount Prospect, IL
Mount Prospect, Sunday, 11 October, 02:33
Mostly clear. Feels like 60°. High 77°, low 58°.
Monthly outlook for Mount Prospect, IL: average high 61.4°, average low 49.3°. That is 1.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 12 October (83°), the coolest 18 October (36°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 62.7° | 60.5° | +1.2° |
| 21 October – 30 October | 59.3° | 56.9° | +1.4° |
| 31 October – 9 November | at normal | 52.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Park Ridge (6 mi).
0
Mount Prospect, Monday, 12 October
Clear. High 83°, low 65°.
0.11
Mount Prospect, Tuesday, 13 October
Rain. High 76°, low 65°.
0.3Mount Prospect, Wednesday, 14 October
Rain. High 65°, low 56°.
0
Mount Prospect, Thursday, 15 October
Overcast. High 57°, low 50°.
0.02
Mount Prospect, Friday, 16 October
Light snow. High 56°, low 40°.
0Mount Prospect, Saturday, 17 October
Overcast. High 45°, low 36°.
0Mount Prospect, Sunday, 18 October
Overcast. High 48°, low 36°.
0Mount Prospect, Monday, 19 October
Overcast. High 57°, low 43°.
0Mount Prospect, Tuesday, 20 October
Clear. High 62°, low 46°.
0
Mount Prospect, Wednesday, 21 October
Mostly clear. High 67°, low 50°.
0Mount Prospect, Thursday, 22 October
Clear. High 61°, low 51°.
0Mount Prospect, Friday, 23 October
Overcast. High 56°, low 46°.
0
Mount Prospect, Saturday, 24 October
Partly cloudy. High 57°, low 43°.
0Mount Prospect, Sunday, 25 October
Overcast. High 54°, low 51°.
0.08Mount Prospect, Monday, 26 October
Light rain. High 61°, low 52°.
0.09
Mount Prospect, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Mount Prospect, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Mount Prospect, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Mount Prospect, Friday, 30 October
Climate normal for this date — 60-year average.
0.14Mount Prospect, Saturday, 31 October
Climate normal for this date — 60-year average.
0.16Mount Prospect, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Mount Prospect, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Mount Prospect, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Mount Prospect, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13Mount Prospect, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Mount Prospect, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Mount Prospect, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Mount Prospect, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Mount Prospect, Monday, 9 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 Mount Prospect, 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 Mount Prospect, 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
44°Weather in Annapolis, MD65°Weather in Atlanta, GA64°Weather in Augusta, ME37°Weather in Austin, TX74°Weather in Baton Rouge, LA63°Weather in Bismarck, ND51°Weather in Boise, ID50°Weather in Boston, MA46°Weather in Carson City, NV54°Weather in Charleston, WV56°Weather in Charlotte Amalie, VI81°Weather in Cheyenne, WY61°Weather in Columbia, SC75°Weather in Columbus, OH57°Weather in Concord, NH41°Weather in Denver, CO63°Weather in Des Moines, IA67°Weather in Dover, DE64°Weather in Frankfort, KY60°Weather in Harrisburg, PA57°Weather in Hartford, CT46°Weather in Helena, MT31°Weather in Honolulu, HI77°Weather in Indianapolis, IN60°Weather in Jackson, MS64°Weather in Jefferson City, MO59°Weather in Juneau, AK28°Weather in Lansing, MI56°Weather in Lincoln, NE72°Weather in Little Rock, AR64°Weather in Madison, WI62°Weather in Montgomery, AL62°Weather in Montpelier, VT37°Weather in Nashville, TN63°Weather in Oklahoma City, OK70°Weather in Olympia, WA44°Weather in Phoenix, AZ75°Weather in Pierre, SD
55°Weather in Providence, RI47°Weather in Raleigh, NC69°Weather in Richmond, VA67°Weather in Sacramento, CA55°Weather in Salem, OR46°Weather in Salt Lake City, UT68°Weather in San Juan, PR76°Weather in Santa Fe, NM57°Weather in Springfield, IL58°Weather in St. Paul, MN73°Weather in Tallahassee, FL72°Weather in Topeka, KS68°Weather in Trenton, NJ57°Weather in Washington, DC64°61°Weather in Sulphur Springs, IL57°Weather in Summer Hill, IL57°Weather in Summerville, IL57°Weather in Sunbeam, IL58°Weather in Sutter, IL61°Weather in Sutton, IL58°Weather in Swan Creek, IL57°Weather in Swedona, IL58°Weather in Sweetwater, IL55°Weather in Sylvan Lake, IL58°Weather in Talbott, IL57°Weather in Tamalco, IL59°Weather in Taylor Ridge, IL59°Weather in Temple Hill, IL60°Weather in Terre Haute, IL58°Weather in Texas City, IL63°Weather in Texico, IL58°Weather in Thackeray, IL62°Weather in The Burg, IL55°