Grundy County climate

Grundy County Weather in July

NOAA 1991-2020 normals for Trenton, 5.1 km from Grundy County

Average highs run from 88°F on July 1 to 89°F on July 31, and lows from 66°F to 67°F. Normal precipitation for the month is 4.77 in over about 8 wet days.

July day by day

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

Normal daily high and low temperature at Grundy County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
89°F
Average low
67°F
Precipitation
4.77 in
Record high
106°FJul 7, 2012
Record low
51°FJul 3, 2014
Chance of a freeze
0%
Days of 90°F or more
14.5
Daylight
14 h 58 min to 14 h 17 min
Cloud cover
48%
Humidity
73%
Dew point
67°F
Wind
8.1 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
Jul 188°F66°F98°F 201257°F 200829%0%
Jul 288°F66°F97°F 201255°F 201429%0%
Jul 388°F66°F98°F 201251°F 201429%0%
Jul 488°F66°F99°F 201256°F 201329%0%
Jul 588°F66°F101°F 201257°F 200829%0%
Jul 689°F66°F102°F 201256°F 200628%0%
Jul 789°F67°F106°F 201255°F 200428%0%
Jul 889°F67°F96°F 200257°F 201828%0%
Jul 989°F67°F100°F 200255°F 202328%0%
Jul 1089°F67°F100°F 201856°F 202327%0%
Jul 1189°F67°F99°F 201857°F 199927%0%
Jul 1289°F67°F101°F 201854°F 199927%0%
Jul 1389°F67°F99°F 201854°F 199927%0%
Jul 1489°F67°F97°F 201257°F 200227%0%
Jul 1589°F67°F98°F 202257°F 200227%0%
Jul 1689°F67°F97°F 201254°F 201427%0%
Jul 1789°F67°F99°F 201253°F 201427%0%
Jul 1889°F67°F104°F 201253°F 200927%0%
Jul 1989°F67°F102°F 201254°F 200927%0%
Jul 2089°F67°F98°F 200659°F 200027%0%
Jul 2189°F67°F99°F 201158°F 200027%0%
Jul 2289°F67°F100°F 201255°F 200927%0%
Jul 2389°F67°F105°F 201254°F 200027%0%
Jul 2489°F67°F103°F 201255°F 200327%0%
Jul 2589°F67°F105°F 201258°F 200427%0%
Jul 2689°F67°F100°F 202356°F 200427%0%
Jul 2789°F67°F100°F 201153°F 200427%0%
Jul 2889°F67°F103°F 202351°F 201327%0%
Jul 2989°F67°F101°F 201257°F 201427%0%
Jul 3089°F67°F101°F 200657°F 200928%0%
Jul 3189°F67°F103°F 201253°F 200928%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grundy County, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

July 1
sunrise 5:49 AM, sunset 8:47 PM
July 31
sunrise 6:12 AM, sunset 8:29 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00238444 (Trenton), public domain. Records: NOAA GHCN-Daily, station USW00053916, 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.