Isle climate

Isle Weather in May

NOAA 1991-2020 normals for Isle 12N, 20.3 km from Isle

Average highs run from 58°F on May 1 to 70°F on May 31, and lows from 37°F to 48°F. Normal precipitation for the month is 3.12 in over about 10 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 Isle, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
65°F
Average low
43°F
Precipitation
3.12 in
Snowfall
0.4 in
Record high
107°FMay 31, 1934
Record low
15°FMay 4, 1907
Chance of a freeze
80%
Daylight
14 h 22 min to 15 h 30 min
Cloud cover
66%
Humidity
71%
Dew point
45°F
Wind
11.6 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
May 158°F37°F92°F 195920°F 198428%2%
May 259°F38°F94°F 195921°F 197729%2%
May 359°F38°F93°F 194917°F 190729%2%
May 460°F38°F92°F 195215°F 190729%2%
May 560°F39°F88°F 191821°F 198929%1%
May 661°F39°F88°F 193420°F 197629%1%
May 761°F40°F89°F 201620°F 190630%1%
May 862°F40°F91°F 199022°F 190730%1%
May 962°F40°F90°F 192820°F 194530%1%
May 1062°F41°F87°F 198724°F 194530%1%
May 1163°F41°F87°F 200721°F 194630%1%
May 1263°F42°F89°F 202521°F 194630%1%
May 1364°F42°F88°F 193218°F 190730%1%
May 1464°F42°F93°F 193219°F 192530%1%
May 1565°F43°F92°F 193126°F 198030%1%
May 1665°F43°F93°F 193417°F 198830%0%
May 1765°F44°F89°F 197227°F 197331%0%
May 1866°F44°F96°F 191124°F 191531%0%
May 1966°F44°F91°F 191120°F 200031%0%
May 2066°F45°F91°F 192525°F 190731%0%
May 2167°F45°F91°F 196428°F 192431%0%
May 2267°F45°F93°F 196423°F 198731%0%
May 2367°F46°F88°F 198028°F 193131%0%
May 2468°F46°F87°F 198018°F 198831%0%
May 2568°F46°F92°F 197828°F 198331%0%
May 2668°F47°F91°F 191125°F 198431%0%
May 2769°F47°F93°F 196926°F 200031%0%
May 2869°F47°F99°F 193427°F 198431%0%
May 2969°F48°F93°F 200628°F 198432%0%
May 3070°F48°F96°F 193429°F 199032%0%
May 3170°F48°F107°F 193430°F 190832%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Isle, 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 (CDT).

May 1
sunrise 6:00 AM, sunset 8:22 PM
May 31
sunrise 5:27 AM, sunset 8:57 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00214103 (Isle 12N), public domain. Records: NOAA GHCN-Daily, station USC00215615, 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.