Fortuna Weather in May
Average highs run from 63°F on May 1 to 66°F on May 31, and lows from 47°F to 50°F. Normal precipitation for the month is 1.91 in over about 10 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
- 64°F
- Average low
- 49°F
- Precipitation
- 1.91 in
- Record high
- 97°FMay 15, 2008
- Record low
- 33°FMay 7, 1950
- Chance of a freeze
- 0%
- Daylight
- 13 h 58 min to 14 h 53 min
- Cloud cover
- 50%
- Humidity
- 80%
- Dew point
- 46°F
- Wind
- 4.5 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 | 63°F | 47°F | 90°F 2014 | 35°F 1954 | 37% | 0% |
| May 2 | 63°F | 47°F | 85°F 2013 | 36°F 1954 | 37% | 0% |
| May 3 | 63°F | 47°F | 82°F 2013 | 37°F 1950 | 36% | 0% |
| May 4 | 63°F | 47°F | 83°F 1935 | 38°F 1952 | 36% | 0% |
| May 5 | 63°F | 47°F | 86°F 1990 | 39°F 1952 | 35% | 0% |
| May 6 | 64°F | 47°F | 80°F 1953 | 38°F 1964 | 35% | 0% |
| May 7 | 64°F | 48°F | 91°F 1949 | 33°F 1950 | 34% | 0% |
| May 8 | 64°F | 48°F | 89°F 1987 | 38°F 1977 | 34% | 0% |
| May 9 | 64°F | 48°F | 86°F 1936 | 36°F 1983 | 33% | 0% |
| May 10 | 64°F | 48°F | 92°F 1941 | 38°F 1983 | 33% | 0% |
| May 11 | 64°F | 48°F | 81°F 1960 | 40°F 1944 | 33% | 0% |
| May 12 | 64°F | 48°F | 80°F 1939 | 40°F 1958 | 32% | 0% |
| May 13 | 64°F | 48°F | 93°F 1939 | 39°F 1958 | 32% | 0% |
| May 14 | 64°F | 48°F | 90°F 2023 | 40°F 1974 | 32% | 0% |
| May 15 | 64°F | 49°F | 97°F 2008 | 39°F 1976 | 32% | 0% |
| May 16 | 64°F | 49°F | 93°F 2008 | 42°F 1944 | 31% | 0% |
| May 17 | 65°F | 49°F | 91°F 1956 | 40°F 1974 | 31% | 0% |
| May 18 | 65°F | 49°F | 85°F 1997 | 38°F 1974 | 31% | 0% |
| May 19 | 65°F | 49°F | 81°F 1997 | 41°F 1974 | 30% | 0% |
| May 20 | 65°F | 49°F | 82°F 1978 | 41°F 2022 | 30% | 0% |
| May 21 | 65°F | 49°F | 87°F 1941 | 41°F 1960 | 30% | 0% |
| May 22 | 65°F | 49°F | 87°F 2001 | 40°F 1986 | 29% | 0% |
| May 23 | 65°F | 50°F | 83°F 1936 | 41°F 1950 | 29% | 0% |
| May 24 | 65°F | 50°F | 79°F 1992 | 42°F 1950 | 29% | 0% |
| May 25 | 65°F | 50°F | 86°F 1982 | 39°F 1975 | 28% | 0% |
| May 26 | 65°F | 50°F | 82°F 1979 | 40°F 1973 | 28% | 0% |
| May 27 | 65°F | 50°F | 77°F 1947 | 40°F 1927 | 27% | 0% |
| May 28 | 66°F | 50°F | 80°F 2002 | 39°F 1977 | 27% | 0% |
| May 29 | 66°F | 50°F | 85°F 1984 | 42°F 1950 | 26% | 0% |
| May 30 | 66°F | 50°F | 78°F 2001 | 41°F 1979 | 26% | 0% |
| May 31 | 66°F | 50°F | 84°F 1997 | 42°F 1988 | 25% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 6:15 AM, sunset 8:13 PM
- May 31
- sunrise 5:48 AM, sunset 8:41 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00048045 (Scotia), public domain. Records: NOAA GHCN-Daily, station USC00048045, 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.