Iron River climate

Iron River Weather in May

NOAA 1991-2020 normals for Brule RS, 14.4 km from Iron River

Average highs run from 58°F on May 1 to 70°F on May 31, and lows from 35°F to 45°F. Normal precipitation for the month is 3.66 in.

May day by day

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

Normal daily high and low temperature at Iron River, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
64°F
Average low
40°F
Precipitation
3.66 in
Snowfall
0.1 in
Record high
93°FMay 6, 2016
Record low
21°FMay 3, 2004
Chance of a freeze
96%
Daylight
14 h 24 min to 15 h 33 min
Cloud cover
70%
Humidity
76%
Dew point
43°F
Wind
7.2 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°F35°F85°F 202125°F 20045%
May 258°F35°F81°F 201222°F 20044%
May 359°F35°F82°F 200021°F 20044%
May 459°F36°F81°F 199924°F 20224%
May 560°F36°F88°F 200024°F 20044%
May 660°F36°F93°F 201626°F 20203%
May 761°F37°F82°F 201523°F 20193%
May 861°F37°F81°F 200724°F 20263%
May 962°F37°F86°F 202525°F 20252%
May 1062°F38°F89°F 200725°F 20102%
May 1163°F38°F88°F 202525°F 20262%
May 1263°F39°F89°F 202521°F 20202%
May 1363°F39°F89°F 202524°F 20202%
May 1464°F39°F91°F 200727°F 20041%
May 1564°F40°F86°F 202624°F 20041%
May 1665°F40°F90°F 201826°F 20111%
May 1765°F40°F84°F 202126°F 20161%
May 1865°F41°F89°F 201227°F 20021%
May 1966°F41°F89°F 201223°F 20001%
May 2066°F41°F90°F 200924°F 20021%
May 2167°F42°F82°F 201627°F 20021%
May 2267°F42°F85°F 201630°F 20060%
May 2367°F42°F85°F 202332°F 20030%
May 2468°F43°F93°F 201029°F 20130%
May 2568°F43°F88°F 201829°F 20230%
May 2668°F44°F91°F 201829°F 20110%
May 2768°F44°F89°F 201828°F 20110%
May 2869°F44°F93°F 200627°F 20080%
May 2969°F45°F93°F 200625°F 20210%
May 3069°F45°F90°F 200230°F 20150%
May 3170°F45°F90°F 202329°F 20150%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Iron River, in percent, and of at least 0.1 inch of snowfall.0123451102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

May 1
sunrise 5:51 AM, sunset 8:15 PM
May 31
sunrise 5:17 AM, sunset 8:50 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00471131 (Brule RS), public domain. Records: NOAA GHCN-Daily, station USW00094929, 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.