Arcata, CA Weather & Climate Normals
Arcata's real weather, in one number
Arcata, CA scores 57/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Arcata's hottest and coldest months
Arcata's hottest month is Aug, averaging 58°F; its coldest is Dec, averaging 48°F, a 9.9°F swing across the year, one of the smaller gaps in this dataset.
Arcata's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 56°F | 41°F | 7.52in |
| Feb | 57°F | 41°F | 6.48in |
| Mar | 57°F | 41°F | 6.28in |
| Apr | 58°F | 43°F | 4.11in |
| May | 60°F | 46°F | 2.1in |
| Jun | 63°F | 49°F | 0.96in |
| Jul | 63°F | 51°F | 0.19in |
| Aug | 65°F | 51°F | 0.26in |
| Sep | 65°F | 49°F | 0.85in |
| Oct | 64°F | 45°F | 2.71in |
| Nov | 59°F | 42°F | 5.71in |
| Dec | 56°F | 40°F | 8.95in |
Jun, Jul, Aug, and Sep are the best time to see Arcata at its mildest; the rest of the year, plan around Dec's cold.
Rain and snow in Arcata
Over a typical year, Arcata sees about 46.12in of precipitation a year across roughly 153 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Arcata ranks
Arcata ranks 680 of 4876 US cities in this dataset for comfort score, and 341 of 429 within CA. About 18,748 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Arcata Eureka Ap, CA US, 8.2 miles from Arcata, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is