Saint Ignatius climate

Saint Ignatius Weather in May

NOAA 1991-2020 normals for Saint Ignatius, 0.6 km from Saint Ignatius

Average highs run from 64°F on May 1 to 72°F on May 31, and lows from 37°F to 45°F. Normal precipitation for the month is 2.30 in over about 11 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 Saint Ignatius, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
69°F
Average low
41°F
Precipitation
2.30 in
Snowfall
1.7 in
Record high
91°FMay 31, 1986
Record low
17°FMay 1, 1954
Chance of a freeze
80%
Daylight
14 h 28 min to 15 h 40 min
Cloud cover
71%
Humidity
73%
Dew point
36°F
Wind
4.7 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 164°F37°F76°F 191417°F 195431%9%
May 264°F37°F80°F 193026°F 200931%9%
May 365°F37°F80°F 199825°F 201231%8%
May 465°F38°F78°F 193724°F 196331%8%
May 565°F38°F80°F 194426°F 196231%7%
May 666°F38°F83°F 199221°F 200132%7%
May 766°F39°F85°F 199226°F 193332%6%
May 866°F39°F83°F 199226°F 193532%6%
May 967°F39°F85°F 199425°F 200232%6%
May 1067°F39°F88°F 194024°F 194633%5%
May 1167°F40°F86°F 194027°F 197333%5%
May 1268°F40°F84°F 193226°F 195333%4%
May 1368°F40°F85°F 197626°F 194334%4%
May 1468°F41°F87°F 193629°F 191634%4%
May 1569°F41°F83°F 193922°F 201334%4%
May 1669°F41°F85°F 197330°F 197434%3%
May 1769°F42°F87°F 197328°F 200335%3%
May 1870°F42°F87°F 197327°F 196535%3%
May 1970°F42°F86°F 200630°F 197435%3%
May 2070°F42°F82°F 195829°F 193336%3%
May 2170°F43°F85°F 192829°F 195336%2%
May 2271°F43°F90°F 191924°F 196036%2%
May 2371°F43°F85°F 191029°F 193036%2%
May 2471°F43°F85°F 193132°F 196036%2%
May 2571°F44°F87°F 198329°F 196437%2%
May 2671°F44°F87°F 195828°F 191837%2%
May 2772°F44°F86°F 193630°F 191837%1%
May 2872°F44°F89°F 193630°F 196037%1%
May 2972°F44°F90°F 198629°F 195137%1%
May 3072°F45°F90°F 198631°F 201437%1%
May 3172°F45°F91°F 198630°F 195038%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Saint Ignatius, 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 (MDT).

May 1
sunrise 6:20 AM, sunset 8:48 PM
May 31
sunrise 5:44 AM, sunset 9:24 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00247286 (Saint Ignatius), public domain. Records: NOAA GHCN-Daily, station USC00246635, 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.