Eureka weather in May: Eureka, California: normal highs, lows, rain and records for May
Eureka in May has a normal high of 60°F and a normal low of 48°F, a daily mean of 54°F, rising from 58°F on the 1st to 61°F by the 31st. Measurable precipitation falls on 9 days in a normal May, 1.66 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 9°C, 42 mm of precipitation in May.
- NOAA stationEureka Weather Office Woodley Island
- Station IDUSW00024213
- Location40.81°N 124.16°W
- Elevation20 ft (6 m)
- From the centerunder 1 mile
- Population25,412
- Jan 55° 41°
- Feb 55° 41°
- Mar 56° 42°
- Apr 57° 44°
- May 60° 48°
- Jun 62° 50°
- Jul 63° 52°
- Aug 64° 53°
- Sep 64° 51°
- Oct 62° 47°
- Nov 58° 43°
- Dec 55° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Eureka in May?
The normal high is 60°F and the normal low 48°F, for a daily mean of 53.7°F. May is 2.9°F warmer than April and 2.3°F cooler than June. May is the 6th warmest month of the year in Eureka and the 8th wettest. Across the month the normal high rises 3°F, from 58°F on May 1 to 61°F on May 31. From one year to the next May's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Mays in three average between 52°F and 56°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 58°F | 46°F | 36% | 20% |
| May 8 | 59°F | 47°F | 33% | 17% |
| May 15 | 60°F | 48°F | 31% | 15% |
| May 22 | 60°F | 49°F | 29% | 13% |
| May 31 | 61°F | 49°F | 26% | 10% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 58°F | 46°F | 36% | 20% | 14 h |
| May 2 | 58°F | 46°F | 36% | 20% | 14 h |
| May 3 | 58°F | 46°F | 35% | 20% | 14 h |
| May 4 | 59°F | 46°F | 35% | 19% | 14 h |
| May 5 | 59°F | 46°F | 34% | 19% | 14 h |
| May 6 | 59°F | 47°F | 34% | 18% | 14 h 10 min |
| May 7 | 59°F | 47°F | 33% | 18% | 14 h 10 min |
| May 8 | 59°F | 47°F | 33% | 17% | 14 h 10 min |
| May 9 | 59°F | 47°F | 33% | 17% | 14 h 10 min |
| May 10 | 59°F | 47°F | 32% | 17% | 14 h 20 min |
| May 11 | 59°F | 47°F | 32% | 16% | 14 h 20 min |
| May 12 | 59°F | 47°F | 32% | 16% | 14 h 20 min |
| May 13 | 59°F | 47°F | 31% | 16% | 14 h 20 min |
| May 14 | 59°F | 48°F | 31% | 15% | 14 h 20 min |
| May 15 | 60°F | 48°F | 31% | 15% | 14 h 30 min |
| May 16 | 60°F | 48°F | 31% | 15% | 14 h 30 min |
| May 17 | 60°F | 48°F | 30% | 15% | 14 h 30 min |
| May 18 | 60°F | 48°F | 30% | 14% | 14 h 30 min |
| May 19 | 60°F | 48°F | 30% | 14% | 14 h 30 min |
| May 20 | 60°F | 48°F | 29% | 14% | 14 h 30 min |
| May 21 | 60°F | 48°F | 29% | 13% | 14 h 40 min |
| May 22 | 60°F | 49°F | 29% | 13% | 14 h 40 min |
| May 23 | 60°F | 49°F | 29% | 13% | 14 h 40 min |
| May 24 | 60°F | 49°F | 28% | 13% | 14 h 40 min |
| May 25 | 61°F | 49°F | 28% | 12% | 14 h 40 min |
| May 26 | 61°F | 49°F | 28% | 12% | 14 h 40 min |
| May 27 | 61°F | 49°F | 27% | 12% | 14 h 50 min |
| May 28 | 61°F | 49°F | 27% | 11% | 14 h 50 min |
| May 29 | 61°F | 49°F | 26% | 11% | 14 h 50 min |
| May 30 | 61°F | 49°F | 26% | 11% | 14 h 50 min |
| May 31 | 61°F | 49°F | 26% | 10% | 14 h 50 min |
- Normal high
- 60°FMay average
- Normal low
- 48°FMay average
- Precipitation
- 1.66 inmonth total
- Days with precipitation
- 90.01 inch or more
- Daylight
- 14 h to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 1
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024213; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Eureka in May?
On a given May day the chance of 0.01 inch or more is 31% on average, highest around May 1 (36%). In all, 1.66 in falls on 9 days of a normal May.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024213.
What are the records for May in Eureka?
The warmest May temperature on Eureka's official record (since 1886) is 84°F, on May 13, 1939; the coldest is 35°F, on May 1, 1887. The wettest May brought 7.27 in (1889).
The May mean against the 1991-2020 normal of 53.7°F: 2021 52.0°F (−1.7), 2022 52.7°F (−1.0), 2023 53.4°F (−0.3), 2024 52.6°F (−1.1), 2025 53.6°F (−0.1), 2026 54.0°F (+0.3). 1 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.0°F | −1.7°F | 0.25 in |
| 2022 | 52.7°F | −1.0°F | 1.36 in |
| 2023 | 53.4°F | −0.3°F | 0.97 in |
| 2024 | 52.6°F | −1.1°F | 3.00 in |
| 2025 | 53.6°F | −0.1°F | 0.62 in |
| 2026 | 54.0°F | +0.3°F | 0.44 in |
Source: records: ACIS, NWS threaded record EKAthr; recent months: ACIS, station USW00024213. Records and recent months use complete months only.
How does May in Eureka compare across California?
Across the 219 places PlainClimate covers in California, May normal highs run from 58°F in Tahoma to 96°F in Needles; Eureka's is 60°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.