Geneva climate

Geneva Weather in September

NOAA 1991-2020 normals for Geneva, 0.5 km from Geneva

Average highs run from 83°F on September 1 to 74°F on September 30, and lows from 60°F to 50°F. Normal precipitation for the month is 2.86 in over about 6 wet days.

September day by day

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

Normal daily high and low temperature at Geneva, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
55°F
Precipitation
2.86 in
Record high
101°FSep 5, 2012
Record low
30°FSep 23, 2012
Chance of a freeze
8%
Days of 90°F or more
3.5
Daylight
13 h 04 min to 11 h 48 min
Cloud cover
46%
Humidity
62%
Dew point
52°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
Sep 183°F60°F97°F 201244°F 200920%0%
Sep 282°F60°F97°F 201249°F 202420%0%
Sep 382°F60°F98°F 202345°F 200820%0%
Sep 482°F60°F96°F 202343°F 201020%0%
Sep 582°F59°F101°F 201242°F 201120%0%
Sep 682°F59°F94°F 202040°F 201720%0%
Sep 782°F59°F96°F 201341°F 202520%0%
Sep 881°F58°F94°F 202641°F 201220%0%
Sep 981°F58°F96°F 201339°F 200820%0%
Sep 1081°F58°F97°F 201339°F 200820%0%
Sep 1181°F57°F93°F 201344°F 202020%0%
Sep 1280°F57°F95°F 201242°F 202320%0%
Sep 1380°F57°F94°F 202534°F 201420%0%
Sep 1480°F56°F95°F 202534°F 201420%0%
Sep 1580°F56°F93°F 201737°F 201120%0%
Sep 1679°F55°F93°F 201738°F 200820%0%
Sep 1779°F55°F91°F 202141°F 202320%0%
Sep 1879°F55°F94°F 201835°F 201220%0%
Sep 1978°F54°F93°F 202336°F 201220%0%
Sep 2078°F54°F98°F 202239°F 201220%0%
Sep 2178°F54°F99°F 202242°F 201220%0%
Sep 2277°F53°F93°F 201736°F 201120%0%
Sep 2377°F53°F96°F 201730°F 201220%0%
Sep 2477°F52°F93°F 201730°F 201220%0%
Sep 2576°F52°F89°F 202236°F 201120%0%
Sep 2676°F52°F87°F 202037°F 201120%0%
Sep 2775°F51°F92°F 202136°F 201219%0%
Sep 2875°F51°F93°F 202135°F 201219%0%
Sep 2975°F50°F93°F 202130°F 200919%0%
Sep 3074°F50°F94°F 202330°F 200919%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Geneva, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:58 AM, sunset 8:02 PM
September 30
sunrise 7:26 AM, sunset 7:14 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00253175 (Geneva), public domain. Records: NOAA GHCN-Daily, station USC00259513, 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.