Napoleon climate

Napoleon Weather in August

NOAA 1991-2020 normals for Napoleon, 0.2 km from Napoleon

Average highs run from 83°F on August 1 to 77°F on August 31, and lows from 58°F to 52°F. Normal precipitation for the month is 2.40 in over about 7 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 Napoleon, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
81°F
Average low
55°F
Precipitation
2.40 in
Record high
105°FAug 23, 2003
Record low
37°FAug 31, 1994
Chance of a freeze
0%
Days of 90°F or more
3.9
Daylight
14 h 50 min to 13 h 22 min
Cloud cover
48%
Humidity
58%
Dew point
53°F
Wind
10.3 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 183°F58°F94°F 200745°F 200225%0%
Aug 283°F58°F95°F 199745°F 200925%0%
Aug 383°F58°F96°F 202646°F 199224%0%
Aug 483°F58°F97°F 200141°F 200924%0%
Aug 583°F58°F94°F 200644°F 200924%0%
Aug 683°F57°F93°F 200147°F 199224%0%
Aug 782°F57°F100°F 200147°F 202624%0%
Aug 882°F57°F97°F 200141°F 202424%0%
Aug 982°F57°F95°F 199240°F 200424%0%
Aug 1082°F57°F95°F 200639°F 200424%0%
Aug 1182°F57°F96°F 200041°F 199723%0%
Aug 1282°F57°F93°F 201844°F 199223%0%
Aug 1382°F56°F97°F 201844°F 199223%0%
Aug 1482°F56°F96°F 200344°F 199423%0%
Aug 1581°F56°F100°F 200345°F 199423%0%
Aug 1681°F56°F97°F 202144°F 200223%0%
Aug 1781°F56°F102°F 200343°F 200223%0%
Aug 1881°F55°F100°F 202140°F 200423%0%
Aug 1981°F55°F98°F 202140°F 200423%0%
Aug 2080°F55°F94°F 200341°F 200423%0%
Aug 2180°F55°F99°F 201344°F 200123%0%
Aug 2280°F54°F91°F 199546°F 201723%0%
Aug 2380°F54°F105°F 200342°F 200823%0%
Aug 2479°F54°F96°F 199742°F 200723%0%
Aug 2579°F54°F95°F 199740°F 202523%0%
Aug 2679°F53°F94°F 201340°F 202523%0%
Aug 2778°F53°F96°F 199942°F 201423%0%
Aug 2878°F53°F97°F 201044°F 199223%0%
Aug 2978°F52°F92°F 199645°F 200323%0%
Aug 3078°F52°F98°F 201241°F 201423%0%
Aug 3177°F52°F94°F 201537°F 199423%0%

Chance of rain

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

August 1
sunrise 6:20 AM, sunset 9:10 PM
August 31
sunrise 6:58 AM, sunset 8:20 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00326255 (Napoleon), public domain. Records: NOAA GHCN-Daily, station USC00324083, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.