Jefferson County climate

Jefferson County Weather in October

NOAA 1991-2020 normals for Mt Vernon 3 Ne, 8.1 km from Jefferson County

Average highs run from 74°F on October 1 to 61°F on October 31, and lows from 51°F to 39°F. Normal precipitation for the month is 3.53 in over about 9 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.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
68°F
Average low
45°F
Precipitation
3.53 in
Snowfall
0.2 in
Record high
96°FOct 5, 1938
Record low
18°FOct 24, 1981
Chance of a freeze
88%
Daylight
11 h 46 min to 10 h 36 min
Cloud cover
52%
Humidity
71%
Dew point
46°F
Wind
9.8 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 174°F51°F94°F 201932°F 192425%0%
Oct 273°F50°F95°F 195329°F 198525%0%
Oct 373°F50°F93°F 192230°F 198125%0%
Oct 472°F49°F94°F 192229°F 198726%0%
Oct 572°F49°F96°F 193827°F 202026%0%
Oct 672°F48°F92°F 194130°F 198526%0%
Oct 771°F48°F94°F 193927°F 193526%0%
Oct 871°F48°F94°F 193926°F 198726%0%
Oct 971°F47°F93°F 193826°F 200027%0%
Oct 1070°F47°F90°F 193824°F 190627%0%
Oct 1170°F47°F94°F 196328°F 191727%0%
Oct 1269°F46°F88°F 196326°F 198727%0%
Oct 1369°F46°F92°F 194022°F 191728%0%
Oct 1469°F45°F90°F 189924°F 197928%0%
Oct 1568°F45°F90°F 193827°F 200628%0%
Oct 1668°F45°F89°F 193827°F 199128%0%
Oct 1767°F44°F90°F 193826°F 194328%0%
Oct 1867°F44°F90°F 193820°F 194829%0%
Oct 1966°F44°F89°F 195324°F 199229%0%
Oct 2066°F43°F92°F 196322°F 202229%0%
Oct 2166°F43°F88°F 196322°F 195229%0%
Oct 2265°F42°F88°F 192023°F 197629%0%
Oct 2365°F42°F88°F 193925°F 197629%0%
Oct 2464°F42°F87°F 194018°F 198130%0%
Oct 2564°F41°F88°F 194022°F 201330%1%
Oct 2663°F41°F88°F 194021°F 194230%1%
Oct 2763°F41°F89°F 194022°F 198230%1%
Oct 2862°F40°F89°F 192723°F 197630%1%
Oct 2962°F40°F85°F 194621°F 192531%1%
Oct 3061°F40°F86°F 195022°F 192531%1%
Oct 3161°F39°F85°F 193321°F 192331%1%

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.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

October 1
sunrise 6:52 AM, sunset 6:38 PM
October 31
sunrise 7:21 AM, sunset 5:57 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00115943 (Mt Vernon 3 Ne), public domain. Records: NOAA GHCN-Daily, station USC00115943, 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.