Thompson Falls Weather in May
Average highs run from 64°F on May 1 to 71°F on May 31, and lows from 37°F to 45°F. Normal precipitation for the month is 2.09 in over about 14 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
- 68°F
- Average low
- 41°F
- Precipitation
- 2.09 in
- Record high
- 80°FMay 21, 1942
- Record low
- 9°FMay 1, 1954
- Chance of a freeze
- 74%
- Days of 90°F or more
- 1.1
- Daylight
- 14 h 30 min to 15 h 42 min
- Cloud cover
- 68%
- Humidity
- 74%
- Dew point
- 38°F
- Wind
- 4.3 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 64°F | 37°F | 70°F 2023 | 9°F 1954 | 45% | |
| May 2 | 64°F | 38°F | 72°F 2023 | 19°F 1954 | 45% | |
| May 3 | 65°F | 38°F | 68°F 2023 | 19°F 1950 | 45% | |
| May 4 | 65°F | 38°F | 70°F 2023 | 19°F 2010 | 45% | |
| May 5 | 65°F | 38°F | 70°F 1953 | 19°F 1999 | 45% | |
| May 6 | 66°F | 39°F | 71°F 1942 | 17°F 2010 | 45% | |
| May 7 | 66°F | 39°F | 69°F 1947 | 19°F 2002 | 44% | |
| May 8 | 67°F | 39°F | 71°F 1949 | 17°F 2002 | 44% | |
| May 9 | 67°F | 40°F | 69°F 1949 | 20°F 1999 | 44% | |
| May 10 | 67°F | 40°F | 71°F 1940 | 21°F 1943 | 44% | |
| May 11 | 68°F | 40°F | 75°F 1941 | 18°F 1943 | 44% | |
| May 12 | 68°F | 40°F | 75°F 1949 | 21°F 1942 | 44% | |
| May 13 | 68°F | 41°F | 65°F 1939 | 22°F 2022 | 44% | |
| May 14 | 68°F | 41°F | 73°F 1939 | 22°F 1955 | 45% | |
| May 15 | 69°F | 41°F | 75°F 1939 | 23°F 1942 | 45% | |
| May 16 | 69°F | 42°F | 74°F 2006 | 20°F 1942 | 45% | |
| May 17 | 69°F | 42°F | 75°F 2006 | 22°F 2003 | 45% | 0% |
| May 18 | 69°F | 42°F | 75°F 1956 | 22°F 2003 | 45% | 0% |
| May 19 | 70°F | 42°F | 71°F 2023 | 24°F 1941 | 45% | 0% |
| May 20 | 70°F | 43°F | 73°F 2023 | 25°F 1953 | 46% | 0% |
| May 21 | 70°F | 43°F | 80°F 1942 | 24°F 2010 | 46% | 0% |
| May 22 | 70°F | 43°F | 71°F 1951 | 23°F 1944 | 46% | 0% |
| May 23 | 70°F | 43°F | 74°F 1941 | 23°F 2002 | 46% | 0% |
| May 24 | 70°F | 44°F | 75°F 2003 | 27°F 1953 | 46% | 0% |
| May 25 | 71°F | 44°F | 72°F 1948 | 27°F 1954 | 47% | 0% |
| May 26 | 71°F | 44°F | 73°F 1949 | 25°F 2011 | 47% | 0% |
| May 27 | 71°F | 44°F | 73°F 1944 | 24°F 1955 | 47% | 0% |
| May 28 | 71°F | 45°F | 76°F 2026 | 24°F 1951 | 47% | 0% |
| May 29 | 71°F | 45°F | 72°F 2020 | 25°F 2001 | 47% | 0% |
| May 30 | 71°F | 45°F | 75°F 2020 | 25°F 1955 | 47% | 0% |
| May 31 | 71°F | 45°F | 79°F 1956 | 24°F 1955 | 47% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 6:24 AM, sunset 8:54 PM
- May 31
- sunrise 5:48 AM, sunset 9:30 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00248211 (Thompson Falls Ph), public domain. Records: NOAA GHCN-Daily, station USW00024154, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.