Post Falls Weather in May
Average highs run from 62°F on May 1 to 69°F on May 31, and lows from 40°F to 48°F. Normal precipitation for the month is 2.14 in over about 11 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 66°F
- Average low
- 44°F
- Precipitation
- 2.14 in
- Record high
- 98°FMay 30, 1983
- Record low
- 21°FMay 1, 1954
- Chance of a freeze
- 25%
- Daylight
- 14 h 31 min to 15 h 43 min
- Cloud cover
- 64%
- Humidity
- 69%
- Dew point
- 41°F
- Wind
- 5.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 62°F | 40°F | 85°F 2023 | 21°F 1954 | 36% |
| May 2 | 62°F | 41°F | 84°F 1931 | 24°F 1954 | 36% |
| May 3 | 62°F | 41°F | 89°F 2023 | 25°F 1923 | 36% |
| May 4 | 63°F | 41°F | 89°F 2023 | 25°F 2007 | 36% |
| May 5 | 63°F | 41°F | 90°F 1966 | 27°F 1949 | 36% |
| May 6 | 63°F | 42°F | 89°F 1966 | 27°F 1965 | 36% |
| May 7 | 64°F | 42°F | 86°F 1947 | 26°F 1935 | 36% |
| May 8 | 64°F | 42°F | 86°F 1949 | 25°F 1935 | 36% |
| May 9 | 64°F | 43°F | 90°F 1949 | 24°F 1922 | 36% |
| May 10 | 65°F | 43°F | 90°F 1949 | 26°F 1946 | 36% |
| May 11 | 65°F | 43°F | 90°F 1949 | 28°F 1943 | 36% |
| May 12 | 65°F | 43°F | 90°F 1949 | 27°F 1943 | 36% |
| May 13 | 66°F | 44°F | 89°F 1949 | 28°F 1985 | 36% |
| May 14 | 66°F | 44°F | 92°F 1931 | 27°F 1955 | 36% |
| May 15 | 66°F | 44°F | 90°F 1939 | 28°F 1943 | 36% |
| May 16 | 66°F | 45°F | 92°F 1939 | 28°F 1942 | 36% |
| May 17 | 66°F | 45°F | 90°F 2006 | 28°F 1942 | 36% |
| May 18 | 67°F | 45°F | 90°F 1956 | 30°F 1965 | 36% |
| May 19 | 67°F | 45°F | 89°F 1954 | 30°F 1951 | 36% |
| May 20 | 67°F | 46°F | 88°F 1897 | 29°F 1933 | 36% |
| May 21 | 67°F | 46°F | 90°F 1913 | 29°F 1953 | 36% |
| May 22 | 67°F | 46°F | 90°F 1928 | 31°F 1960 | 36% |
| May 23 | 68°F | 46°F | 90°F 1958 | 29°F 1922 | 36% |
| May 24 | 68°F | 46°F | 90°F 1985 | 30°F 1950 | 36% |
| May 25 | 68°F | 47°F | 94°F 1934 | 33°F 1900 | 36% |
| May 26 | 68°F | 47°F | 95°F 1928 | 30°F 1918 | 36% |
| May 27 | 68°F | 47°F | 95°F 1936 | 32°F 1900 | 36% |
| May 28 | 68°F | 47°F | 92°F 1936 | 30°F 1921 | 36% |
| May 29 | 68°F | 48°F | 96°F 1983 | 30°F 1951 | 36% |
| May 30 | 69°F | 48°F | 98°F 1983 | 21°F 1951 | 35% |
| May 31 | 69°F | 48°F | 98°F 1986 | 29°F 1951 | 35% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 5:30 AM, sunset 8:01 PM
- May 31
- sunrise 4:54 AM, sunset 8:37 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00101956 (Coeur D'alene), public domain. Records: NOAA GHCN-Daily, station USC00101956, 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.