Sisters Weather in May
Average highs run from 62°F on May 1 to 70°F on May 31, and lows from 31°F to 37°F. Normal precipitation for the month is 1.53 in.
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
- 34°F
- Precipitation
- 1.53 in
- Record high
- 99°FMay 30, 1986
- Record low
- 12°FMay 2, 1964
- Chance of a freeze
- 100%
- Daylight
- 14 h 13 min to 15 h 17 min
- Cloud cover
- 64%
- Humidity
- 66%
- Dew point
- 39°F
- Wind
- 6.9 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 | 62°F | 31°F | 86°F 1998 | 16°F 1954 | ||
| May 2 | 62°F | 32°F | 86°F 1966 | 12°F 1964 | ||
| May 3 | 63°F | 32°F | 89°F 1966 | 14°F 1964 | ||
| May 4 | 63°F | 32°F | 91°F 1966 | 16°F 1962 | ||
| May 5 | 63°F | 32°F | 89°F 1992 | 19°F 1978 | ||
| May 6 | 64°F | 33°F | 92°F 1992 | 15°F 1965 | ||
| May 7 | 64°F | 33°F | 90°F 1987 | 19°F 2020 | ||
| May 8 | 64°F | 33°F | 90°F 1987 | 18°F 2002 | ||
| May 9 | 65°F | 33°F | 85°F 1969 | 21°F 1948 | ||
| May 10 | 65°F | 33°F | 87°F 2013 | 19°F 2012 | ||
| May 11 | 65°F | 34°F | 90°F 2013 | 20°F 1964 | ||
| May 12 | 66°F | 34°F | 88°F 1988 | 21°F 1985 | ||
| May 13 | 66°F | 34°F | 90°F 1973 | 21°F 1974 | 0% | |
| May 14 | 66°F | 34°F | 90°F 1973 | 22°F 1964 | 0% | |
| May 15 | 66°F | 34°F | 90°F 1973 | 21°F 1974 | 0% | |
| May 16 | 67°F | 35°F | 92°F 2008 | 24°F 1984 | 0% | |
| May 17 | 67°F | 35°F | 97°F 2008 | 22°F 1971 | 0% | |
| May 18 | 67°F | 35°F | 90°F 1954 | 20°F 2003 | 0% | |
| May 19 | 67°F | 35°F | 90°F 2023 | 24°F 1987 | 0% | |
| May 20 | 68°F | 35°F | 87°F 1967 | 22°F 1975 | 0% | |
| May 21 | 68°F | 36°F | 89°F 1958 | 25°F 2025 | 0% | |
| May 22 | 68°F | 36°F | 95°F 2001 | 21°F 2013 | 0% | |
| May 23 | 68°F | 36°F | 94°F 2001 | 18°F 1964 | 0% | |
| May 24 | 68°F | 36°F | 93°F 1999 | 25°F 1972 | 0% | |
| May 25 | 69°F | 36°F | 92°F 1986 | 20°F 1975 | 0% | |
| May 26 | 69°F | 36°F | 91°F 2001 | 22°F 1964 | 0% | |
| May 27 | 69°F | 36°F | 94°F 1983 | 25°F 1954 | 0% | |
| May 28 | 69°F | 37°F | 94°F 1983 | 26°F 1950 | 0% | |
| May 29 | 69°F | 37°F | 94°F 1986 | 25°F 2001 | 0% | |
| May 30 | 70°F | 37°F | 99°F 1986 | 25°F 1974 | 0% | |
| May 31 | 70°F | 37°F | 98°F 1986 | 24°F 1955 | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 5:57 AM, sunset 8:10 PM
- May 31
- sunrise 5:26 AM, sunset 8:43 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00357857 (Sisters), public domain. Records: NOAA GHCN-Daily, station USW00024230, 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.