Roslyn Weather in May
Average highs run from 62°F on May 1 to 69°F on May 31, and lows from 36°F to 44°F. Normal precipitation for the month is 1.64 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
- 40°F
- Precipitation
- 1.64 in
- Record high
- 86°FMay 31, 1986
- Record low
- 20°FMay 1, 1954
- Chance of a freeze
- 82%
- Daylight
- 14 h 27 min to 15 h 40 min
- Cloud cover
- 67%
- Humidity
- 78%
- Dew point
- 38°F
- Wind
- 4.7 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 | 36°F | 71°F 1998 | 20°F 1954 | |
| May 2 | 63°F | 37°F | 70°F 2026 | 24°F 1952 | |
| May 3 | 63°F | 37°F | 73°F 2023 | 25°F 1949 | |
| May 4 | 63°F | 37°F | 75°F 1966 | 24°F 1962 | |
| May 5 | 64°F | 37°F | 77°F 1992 | 22°F 1965 | |
| May 6 | 64°F | 38°F | 82°F 1992 | 23°F 2002 | |
| May 7 | 64°F | 38°F | 77°F 1987 | 24°F 1999 | |
| May 8 | 64°F | 38°F | 78°F 1987 | 25°F 1955 | |
| May 9 | 65°F | 39°F | 72°F 1987 | 26°F 1991 | |
| May 10 | 65°F | 39°F | 74°F 2019 | 24°F 1944 | |
| May 11 | 65°F | 39°F | 74°F 1993 | 24°F 1985 | |
| May 12 | 66°F | 40°F | 81°F 1993 | 26°F 1964 | |
| May 13 | 66°F | 40°F | 76°F 2018 | 23°F 1964 | |
| May 14 | 66°F | 40°F | 77°F 1973 | 26°F 1955 | |
| May 15 | 66°F | 40°F | 76°F 2006 | 27°F 1974 | |
| May 16 | 66°F | 41°F | 78°F 2006 | 27°F 1965 | |
| May 17 | 67°F | 41°F | 85°F 2006 | 27°F 1971 | |
| May 18 | 67°F | 41°F | 77°F 2006 | 27°F 1950 | |
| May 19 | 67°F | 41°F | 71°F 1956 | 26°F 1975 | |
| May 20 | 67°F | 42°F | 75°F 1958 | 27°F 1960 | |
| May 21 | 67°F | 42°F | 76°F 1958 | 27°F 1960 | |
| May 22 | 68°F | 42°F | 79°F 1958 | 27°F 1978 | |
| May 23 | 68°F | 42°F | 79°F 2001 | 26°F 1975 | |
| May 24 | 68°F | 43°F | 78°F 1958 | 24°F 1975 | |
| May 25 | 68°F | 43°F | 78°F 1958 | 27°F 1964 | |
| May 26 | 68°F | 43°F | 81°F 1958 | 28°F 1966 | |
| May 27 | 68°F | 43°F | 81°F 2005 | 23°F 1966 | |
| May 28 | 69°F | 43°F | 84°F 2005 | 29°F 1951 | |
| May 29 | 69°F | 44°F | 84°F 1983 | 29°F 1951 | |
| May 30 | 69°F | 44°F | 85°F 1986 | 27°F 1955 | |
| May 31 | 69°F | 44°F | 86°F 1986 | 28°F 1955 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 5:48 AM, sunset 8:15 PM
- May 31
- sunrise 5:12 AM, sunset 8:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00451504 (Cle Elum), public domain. Records: NOAA GHCN-Daily, station USW00024237, 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.