Monroe County climate

Monroe County Weather in October

NOAA 1991-2020 normals for Hannibal Locks & Dam, 19.7 km from Monroe County

Average highs run from 71°F on October 1 to 60°F on October 31, and lows from 49°F to 37°F. Normal precipitation for the month is 3.04 in over about 10 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 Monroe County, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
66°F
Average low
43°F
Precipitation
3.04 in
Record high
92°FOct 2, 2019
Record low
18°FOct 24, 1964
Chance of a freeze
74%
Daylight
11 h 46 min to 10 h 31 min
Cloud cover
60%
Humidity
72%
Dew point
44°F
Wind
4.0 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 171°F49°F88°F 201933°F 197229%0%
Oct 271°F49°F92°F 201932°F 196630%0%
Oct 371°F48°F91°F 201925°F 197430%0%
Oct 470°F48°F91°F 201926°F 197430%0%
Oct 570°F47°F88°F 200726°F 196530%0%
Oct 669°F47°F89°F 200726°F 196430%0%
Oct 769°F47°F87°F 200728°F 196631%0%
Oct 869°F46°F90°F 200727°F 200131%0%
Oct 968°F46°F86°F 200728°F 198931%0%
Oct 1068°F45°F85°F 201027°F 197231%0%
Oct 1168°F45°F85°F 200819°F 196431%0%
Oct 1267°F44°F85°F 200821°F 196431%0%
Oct 1367°F44°F87°F 196925°F 198832%0%
Oct 1466°F44°F84°F 198924°F 198832%0%
Oct 1566°F43°F83°F 197528°F 196932%0%
Oct 1666°F43°F81°F 200831°F 197632%0%
Oct 1765°F42°F82°F 196827°F 198232%0%
Oct 1865°F42°F83°F 201622°F 197632%0%
Oct 1964°F41°F80°F 197127°F 200932%0%
Oct 2064°F41°F80°F 197919°F 197233%0%
Oct 2164°F41°F82°F 197925°F 196433%0%
Oct 2263°F40°F82°F 197924°F 197433%0%
Oct 2363°F40°F80°F 202022°F 197633%0%
Oct 2462°F39°F80°F 201218°F 196433%0%
Oct 2562°F39°F81°F 201222°F 198133%0%
Oct 2662°F39°F81°F 199124°F 198733%0%
Oct 2761°F38°F80°F 198422°F 197933%0%
Oct 2861°F38°F78°F 197119°F 197633%0%
Oct 2960°F37°F78°F 197119°F 196533%0%
Oct 3060°F37°F79°F 197120°F 196533%0%
Oct 3160°F37°F80°F 197119°F 198833%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Monroe 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 (EDT).

October 1
sunrise 7:21 AM, sunset 7:07 PM
October 31
sunrise 7:52 AM, sunset 6:23 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00333500 (Hannibal Locks & Dam), public domain. Records: NOAA GHCN-Daily, station USC00331197, 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.