Jefferson County climate

Jefferson County Weather in October

NOAA 1991-2020 normals for Oskaloosa 4 Ne, 9.5 km from Jefferson County

Average highs run from 75°F on October 1 to 61°F on October 31, and lows from 50°F to 38°F. Normal precipitation for the month is 2.92 in over about 6 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
44°F
Precipitation
2.92 in
Snowfall
0.5 in
Record high
96°FOct 3, 1954
Record low
19°FOct 17, 1976
Chance of a freeze
81%
Daylight
11 h 46 min to 10 h 33 min
Cloud cover
51%
Humidity
70%
Dew point
45°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 175°F50°F95°F 197629°F 198422%0%
Oct 274°F50°F95°F 195332°F 200422%0%
Oct 374°F50°F96°F 195430°F 198721%0%
Oct 474°F49°F93°F 196332°F 196821%0%
Oct 573°F49°F96°F 196331°F 196421%0%
Oct 673°F48°F95°F 196326°F 195221%0%
Oct 772°F48°F94°F 202023°F 195221%0%
Oct 872°F48°F91°F 198026°F 197621%0%
Oct 972°F47°F92°F 195425°F 200021%0%
Oct 1071°F47°F95°F 196329°F 201221%0%
Oct 1171°F46°F94°F 197531°F 198721%0%
Oct 1270°F46°F93°F 202428°F 196521%0%
Oct 1370°F46°F91°F 197526°F 200620%0%
Oct 1469°F45°F90°F 196326°F 200620%0%
Oct 1569°F45°F89°F 195031°F 195220%0%
Oct 1669°F44°F87°F 195024°F 196620%0%
Oct 1768°F44°F90°F 199119°F 197620%0%
Oct 1868°F44°F87°F 195024°F 194820%0%
Oct 1967°F43°F88°F 196320°F 197220%0%
Oct 2067°F43°F90°F 200320°F 198920%0%
Oct 2166°F42°F90°F 202224°F 198720%0%
Oct 2266°F42°F87°F 202024°F 198220%0%
Oct 2365°F42°F88°F 199125°F 196620%0%
Oct 2465°F41°F92°F 202425°F 199920%0%
Oct 2564°F41°F85°F 195226°F 197520%1%
Oct 2664°F40°F88°F 201425°F 195720%1%
Oct 2763°F40°F86°F 195024°F 199720%1%
Oct 2863°F40°F86°F 202421°F 196920%1%
Oct 2962°F39°F86°F 195020°F 195220%1%
Oct 3062°F39°F90°F 195023°F 199320%1%
Oct 3161°F38°F88°F 195019°F 199319%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.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

October 1
sunrise 7:18 AM, sunset 7:04 PM
October 31
sunrise 7:48 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 USC00146100 (Oskaloosa 4 Ne), public domain. Records: NOAA GHCN-Daily, station USW00013996, 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.