Summit climate

Summit Weather in October

NOAA 1991-2020 normals for Chicago Midway AP 3SW, 6.3 km from Summit

Average highs run from 70°F on October 1 to 57°F on October 31, and lows from 53°F to 41°F. Normal precipitation for the month is 3.86 in over about 11 wet days.

October day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Summit, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
64°F
Average low
47°F
Precipitation
3.86 in
Snowfall
0.1 in
Record high
90°FOct 3, 2025
Record low
26°FOct 31, 2019
Chance of a freeze
48%
Daylight
11 h 45 min to 10 h 25 min
Cloud cover
65%
Humidity
76%
Dew point
43°F
Wind
11.0 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Oct 170°F53°F88°F 201936°F 200331%0%
Oct 270°F52°F85°F 202332°F 200331%0%
Oct 370°F52°F90°F 202539°F 200432%0%
Oct 469°F52°F89°F 202537°F 201432%0%
Oct 569°F51°F88°F 199736°F 202032%0%
Oct 668°F51°F88°F 200735°F 201232%0%
Oct 768°F50°F88°F 200732°F 200032%0%
Oct 867°F50°F88°F 200734°F 200032%0%
Oct 967°F49°F87°F 201033°F 200032%0%
Oct 1066°F49°F84°F 201033°F 200933%0%
Oct 1166°F49°F84°F 202429°F 200933%0%
Oct 1266°F48°F86°F 200832°F 200633%1%
Oct 1365°F48°F79°F 200034°F 200633%1%
Oct 1465°F48°F78°F 202035°F 200233%1%
Oct 1564°F47°F80°F 199933°F 200634%1%
Oct 1664°F47°F80°F 199834°F 201834%1%
Oct 1763°F46°F85°F 201631°F 200434%1%
Oct 1863°F46°F79°F 200733°F 200934%1%
Oct 1962°F46°F76°F 200035°F 202234%1%
Oct 2062°F45°F85°F 200332°F 201834%1%
Oct 2162°F45°F82°F 202428°F 201834%1%
Oct 2261°F45°F82°F 202231°F 201335%1%
Oct 2361°F44°F81°F 202232°F 201335%1%
Oct 2460°F44°F82°F 202330°F 199935%1%
Oct 2560°F43°F77°F 201229°F 201335%1%
Oct 2659°F43°F77°F 200034°F 199735%2%
Oct 2759°F43°F79°F 201429°F 199735%2%
Oct 2858°F42°F81°F 199928°F 199735%2%
Oct 2958°F42°F83°F 202433°F 200835%2%
Oct 3057°F42°F81°F 202430°F 202035%2%
Oct 3157°F41°F72°F 200026°F 201935%2%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Summit, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

October 1
sunrise 6:48 AM, sunset 6:33 PM
October 31
sunrise 7:22 AM, sunset 5:47 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00111577 (Chicago Midway AP 3SW), public domain. Records: NOAA GHCN-Daily, station USW00014819, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.