Arcata Weather in May
Average highs run from 58°F on May 1 to 61°F on May 31, and lows from 46°F to 49°F. Normal precipitation for the month is 1.66 in over about 9 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
- 60°F
- Average low
- 48°F
- Precipitation
- 1.66 in
- Record high
- 94°FMay 15, 2008
- Record low
- 30°FMay 9, 1999
- Chance of a freeze
- 0%
- Daylight
- 13 h 59 min to 14 h 54 min
- Cloud cover
- 51%
- Humidity
- 80%
- Dew point
- 46°F
- Wind
- 4.0 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 | 58°F | 46°F | 76°F 2016 | 32°F 2013 | 36% | 0% |
| May 2 | 58°F | 46°F | 76°F 2013 | 35°F 2012 | 36% | 0% |
| May 3 | 58°F | 46°F | 70°F 2001 | 36°F 2019 | 35% | 0% |
| May 4 | 59°F | 46°F | 88°F 2013 | 34°F 2010 | 35% | 0% |
| May 5 | 59°F | 46°F | 73°F 2025 | 34°F 2010 | 34% | 0% |
| May 6 | 59°F | 47°F | 73°F 2007 | 32°F 2010 | 34% | 0% |
| May 7 | 59°F | 47°F | 78°F 2007 | 36°F 1999 | 33% | 0% |
| May 8 | 59°F | 47°F | 76°F 2018 | 32°F 2002 | 33% | 0% |
| May 9 | 59°F | 47°F | 76°F 2024 | 30°F 1999 | 33% | 0% |
| May 10 | 59°F | 47°F | 78°F 2024 | 34°F 2002 | 32% | 0% |
| May 11 | 59°F | 47°F | 68°F 2020 | 35°F 2002 | 32% | 0% |
| May 12 | 59°F | 47°F | 68°F 1997 | 36°F 2000 | 32% | 0% |
| May 13 | 59°F | 47°F | 73°F 1997 | 38°F 2006 | 31% | 0% |
| May 14 | 59°F | 48°F | 75°F 2008 | 37°F 2017 | 31% | 0% |
| May 15 | 60°F | 48°F | 94°F 2008 | 37°F 1999 | 31% | 0% |
| May 16 | 60°F | 48°F | 85°F 2008 | 35°F 2003 | 31% | 0% |
| May 17 | 60°F | 48°F | 78°F 1997 | 38°F 1994 | 30% | 0% |
| May 18 | 60°F | 48°F | 77°F 1993 | 37°F 2012 | 30% | 0% |
| May 19 | 60°F | 48°F | 74°F 2001 | 37°F 2003 | 30% | 0% |
| May 20 | 60°F | 48°F | 78°F 2001 | 37°F 2024 | 29% | 0% |
| May 21 | 60°F | 48°F | 66°F 1999 | 37°F 2021 | 29% | 0% |
| May 22 | 60°F | 49°F | 69°F 2006 | 36°F 2013 | 29% | 0% |
| May 23 | 60°F | 49°F | 68°F 1992 | 35°F 2002 | 29% | 0% |
| May 24 | 60°F | 49°F | 70°F 1996 | 40°F 1996 | 28% | 0% |
| May 25 | 61°F | 49°F | 69°F 2005 | 41°F 2013 | 28% | 0% |
| May 26 | 61°F | 49°F | 74°F 2022 | 40°F 2009 | 28% | 0% |
| May 27 | 61°F | 49°F | 71°F 1997 | 40°F 1994 | 27% | 0% |
| May 28 | 61°F | 49°F | 74°F 1997 | 37°F 2007 | 27% | 0% |
| May 29 | 61°F | 49°F | 74°F 1993 | 38°F 1996 | 26% | 0% |
| May 30 | 61°F | 49°F | 74°F 1997 | 40°F 1994 | 26% | 0% |
| May 31 | 61°F | 49°F | 73°F 1997 | 37°F 2000 | 26% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 6:14 AM, sunset 8:13 PM
- May 31
- sunrise 5:47 AM, sunset 8:41 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024213 (Eureka WFO Woodley Island), public domain. Records: NOAA GHCN-Daily, station USW00024283, 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.