Napoleon climate

Napoleon Weather in May

NOAA 1991-2020 normals for Manchester, 18.4 km from Napoleon

Average highs run from 65°F on May 1 to 75°F on May 31, and lows from 41°F to 52°F. Normal precipitation for the month is 4.06 in over about 14 wet days.

May 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.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
70°F
Average low
47°F
Precipitation
4.06 in
Record high
95°FMay 28, 2018
Record low
21°FMay 10, 1966
Chance of a freeze
47%
Daylight
14 h 03 min to 15 h 02 min
Cloud cover
65%
Humidity
77%
Dew point
50°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
May 165°F41°F84°F 195723°F 197843%
May 265°F41°F85°F 195927°F 196643%
May 366°F42°F86°F 195928°F 197143%
May 466°F42°F87°F 194926°F 196643%
May 566°F43°F89°F 195230°F 198743%
May 667°F43°F89°F 194929°F 196844%
May 767°F43°F84°F 196525°F 197444%
May 868°F44°F89°F 197928°F 202044%
May 968°F44°F88°F 197924°F 202044%
May 1068°F44°F86°F 197921°F 196644%
May 1169°F45°F87°F 197929°F 194944%
May 1269°F45°F87°F 199128°F 202044%
May 1369°F46°F88°F 197727°F 199644%
May 1470°F46°F87°F 196232°F 197344%
May 1570°F46°F89°F 196234°F 196444%
May 1670°F47°F91°F 197731°F 201443%0%
May 1771°F47°F91°F 196232°F 197343%0%
May 1871°F47°F90°F 196230°F 197343%0%
May 1971°F48°F91°F 197728°F 200242%0%
May 2072°F48°F92°F 197731°F 200242%0%
May 2172°F49°F93°F 197733°F 195442%0%
May 2272°F49°F88°F 197033°F 199742%0%
May 2373°F49°F90°F 197729°F 196341%0%
May 2473°F50°F91°F 197734°F 199241%0%
May 2573°F50°F92°F 197731°F 199241%0%
May 2673°F50°F89°F 197834°F 195840%0%
May 2774°F51°F93°F 201830°F 196140%0%
May 2874°F51°F95°F 201831°F 200840%0%
May 2974°F51°F92°F 201830°F 196640%0%
May 3075°F52°F91°F 195331°F 199639%0%
May 3175°F52°F94°F 197732°F 196639%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.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 6:33 AM, sunset 8:36 PM
May 31
sunrise 6:04 AM, sunset 9:06 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00205050 (Manchester), public domain. Records: NOAA GHCN-Daily, station USW00014833, 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.