Hannibal climate

Hannibal Weather in August

NOAA 1991-2020 normals for Oswego, 14.7 km from Hannibal

Average highs run from 80°F on August 1 to 77°F on August 31, and lows from 64°F to 60°F. Normal precipitation for the month is 3.45 in over about 11 wet days.

August day by day

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

Normal daily high and low temperature at Hannibal, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
79°F
Average low
62°F
Precipitation
3.45 in
Record high
98°FAug 14, 2002
Record low
44°FAug 27, 2017
Chance of a freeze
0%
Days of 90°F or more
0.9
Daylight
14 h 32 min to 13 h 14 min
Cloud cover
68%
Humidity
74%
Dew point
60°F
Wind
5.6 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
Aug 180°F64°F94°F 200648°F 199836%0%
Aug 280°F64°F93°F 200247°F 202536%0%
Aug 379°F64°F91°F 200749°F 202136%0%
Aug 479°F64°F94°F 201652°F 200036%0%
Aug 579°F64°F95°F 201649°F 201336%0%
Aug 679°F64°F93°F 200146°F 199736%0%
Aug 779°F64°F91°F 202245°F 200436%0%
Aug 879°F63°F93°F 200149°F 200936%0%
Aug 979°F63°F94°F 200151°F 200236%0%
Aug 1079°F63°F91°F 200552°F 199936%0%
Aug 1179°F63°F93°F 202049°F 199635%0%
Aug 1279°F63°F95°F 202547°F 200635%0%
Aug 1379°F63°F91°F 200247°F 200635%0%
Aug 1479°F63°F98°F 200249°F 202235%0%
Aug 1579°F63°F88°F 200950°F 201335%0%
Aug 1679°F63°F91°F 200250°F 202135%0%
Aug 1779°F62°F90°F 200948°F 201735%0%
Aug 1879°F62°F92°F 201546°F 199835%0%
Aug 1979°F62°F87°F 201545°F 199835%0%
Aug 2078°F62°F89°F 201646°F 199835%0%
Aug 2178°F62°F87°F 200347°F 200835%0%
Aug 2278°F62°F88°F 201745°F 200434%0%
Aug 2378°F62°F85°F 202550°F 201134%0%
Aug 2478°F61°F90°F 200745°F 200334%0%
Aug 2578°F61°F92°F 200748°F 200134%0%
Aug 2678°F61°F88°F 202147°F 200834%0%
Aug 2777°F61°F86°F 200444°F 201734%0%
Aug 2877°F61°F91°F 201848°F 200334%0%
Aug 2977°F60°F92°F 201848°F 201434%0%
Aug 3077°F60°F87°F 201047°F 201734%0%
Aug 3177°F60°F93°F 201244°F 199934%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Hannibal, 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).

August 1
sunrise 5:56 AM, sunset 8:28 PM
August 31
sunrise 6:29 AM, sunset 7:43 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00306314 (Oswego), public domain. Records: NOAA GHCN-Daily, station USW00054773, 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.