Jefferson County climate

Jefferson County Weather in October

NOAA 1991-2020 normals for Hamer 4 Nw, 16.7 km from Jefferson County

Average highs run from 70°F on October 1 to 53°F on October 31, and lows from 34°F to 22°F. Normal precipitation for the month is 0.73 in over about 4 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 Jefferson County, in °F, with the record for each date.-20020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
62°F
Average low
28°F
Precipitation
0.73 in
Snowfall
0.1 in
Record high
88°FOct 2, 2010
Record low
-3°FOct 30, 2019
Chance of a freeze
100%
Daylight
11 h 43 min to 10 h 17 min
Cloud cover
54%
Humidity
56%
Dew point
27°F
Wind
6.5 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°F34°F87°F 199221°F 198513%0%
Oct 270°F34°F88°F 201024°F 195013%0%
Oct 369°F34°F86°F 201022°F 200213%0%
Oct 469°F33°F84°F 202424°F 197313%0%
Oct 568°F33°F82°F 202121°F 198113%0%
Oct 667°F33°F80°F 195421°F 200013%0%
Oct 767°F32°F79°F 195620°F 198513%0%
Oct 866°F32°F80°F 195318°F 198513%0%
Oct 966°F31°F82°F 202420°F 196813%0%
Oct 1065°F31°F82°F 195113°F 201913%0%
Oct 1165°F31°F80°F 199115°F 201913%0%
Oct 1264°F30°F80°F 202413°F 200213%0%
Oct 1363°F30°F79°F 194816°F 200213%1%
Oct 1463°F29°F81°F 195817°F 196613%1%
Oct 1562°F29°F78°F 202416°F 196613%1%
Oct 1662°F28°F78°F 195517°F 196613%1%
Oct 1761°F28°F77°F 195515°F 199913%1%
Oct 1860°F28°F78°F 195518°F 196613%1%
Oct 1960°F27°F75°F 195414°F 197613%1%
Oct 2059°F27°F78°F 200315°F 198213%1%
Oct 2159°F26°F77°F 200319°F 197613%1%
Oct 2258°F26°F79°F 200316°F 202013%1%
Oct 2358°F26°F71°F 194813°F 202013%2%
Oct 2457°F25°F74°F 199216°F 198013%2%
Oct 2556°F25°F76°F 20148°F 202013%2%
Oct 2656°F24°F71°F 19991°F 202013%2%
Oct 2755°F24°F71°F 199012°F 200214%2%
Oct 2855°F24°F72°F 19527°F 201914%2%
Oct 2954°F23°F72°F 19683°F 201914%2%
Oct 3054°F23°F69°F 2001-3°F 201914%2%
Oct 3153°F22°F72°F 20141°F 200214%3%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Jefferson County, in percent, and of at least 0.1 inch of snowfall.0510151102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

October 1
sunrise 7:27 AM, sunset 7:10 PM
October 31
sunrise 8:04 AM, sunset 6:21 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00103964 (Hamer 4 Nw), public domain. Records: NOAA GHCN-Daily, station USW00024145, 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.