Montesano Weather in May
Average highs run from 59°F on May 1 to 63°F on May 31, and lows from 43°F to 49°F. Normal precipitation for the month is 3.46 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
- 61°F
- Average low
- 47°F
- Precipitation
- 3.46 in
- Record high
- 87°FMay 29, 2007
- Record low
- 29°FMay 1, 1954
- Chance of a freeze
- 2%
- Daylight
- 14 h 26 min to 15 h 37 min
- Cloud cover
- 69%
- Humidity
- 84%
- Dew point
- 47°F
- Wind
- 4.9 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 | 59°F | 43°F | 80°F 2014 | 29°F 1954 | 53% | 0% |
| May 2 | 59°F | 44°F | 78°F 2016 | 36°F 1965 | 52% | 0% |
| May 3 | 60°F | 44°F | 83°F 1992 | 35°F 2006 | 51% | 0% |
| May 4 | 60°F | 44°F | 83°F 2013 | 35°F 1955 | 51% | 0% |
| May 5 | 60°F | 44°F | 73°F 1994 | 32°F 2010 | 50% | 0% |
| May 6 | 60°F | 45°F | 83°F 1987 | 31°F 1965 | 49% | 0% |
| May 7 | 60°F | 45°F | 85°F 1969 | 30°F 2002 | 49% | 0% |
| May 8 | 60°F | 45°F | 80°F 2020 | 36°F 2002 | 48% | 0% |
| May 9 | 61°F | 45°F | 85°F 2020 | 32°F 1996 | 47% | 0% |
| May 10 | 61°F | 45°F | 83°F 2019 | 34°F 1999 | 47% | 0% |
| May 11 | 61°F | 46°F | 86°F 1971 | 34°F 1959 | 46% | 0% |
| May 12 | 61°F | 46°F | 81°F 1959 | 33°F 1985 | 46% | 0% |
| May 13 | 61°F | 46°F | 82°F 1975 | 33°F 1955 | 46% | 0% |
| May 14 | 61°F | 46°F | 84°F 2014 | 37°F 1964 | 45% | 0% |
| May 15 | 61°F | 47°F | 81°F 2008 | 36°F 1964 | 45% | 0% |
| May 16 | 62°F | 47°F | 83°F 1956 | 36°F 2002 | 45% | 0% |
| May 17 | 62°F | 47°F | 85°F 1956 | 34°F 2011 | 45% | 0% |
| May 18 | 62°F | 47°F | 80°F 1961 | 33°F 2003 | 44% | 0% |
| May 19 | 62°F | 47°F | 86°F 1961 | 37°F 1982 | 44% | 0% |
| May 20 | 62°F | 48°F | 75°F 1967 | 36°F 1975 | 44% | 0% |
| May 21 | 62°F | 48°F | 86°F 1988 | 38°F 1971 | 44% | 0% |
| May 22 | 62°F | 48°F | 80°F 2017 | 37°F 1960 | 44% | 0% |
| May 23 | 62°F | 48°F | 84°F 1999 | 37°F 1964 | 44% | 0% |
| May 24 | 62°F | 48°F | 86°F 1992 | 40°F 1988 | 44% | 0% |
| May 25 | 63°F | 49°F | 82°F 2005 | 37°F 1964 | 44% | 0% |
| May 26 | 63°F | 49°F | 81°F 1972 | 38°F 1973 | 44% | 0% |
| May 27 | 63°F | 49°F | 86°F 1972 | 38°F 1955 | 44% | 0% |
| May 28 | 63°F | 49°F | 82°F 1972 | 37°F 1966 | 44% | 0% |
| May 29 | 63°F | 49°F | 87°F 2007 | 39°F 1966 | 44% | 0% |
| May 30 | 63°F | 49°F | 79°F 1956 | 39°F 1970 | 44% | 0% |
| May 31 | 63°F | 49°F | 85°F 1970 | 35°F 1953 | 44% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 5:59 AM, sunset 8:25 PM
- May 31
- sunrise 5:24 AM, sunset 9:01 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00450008 (Aberdeen), public domain. Records: NOAA GHCN-Daily, station USW00094225, 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.