Vallejo weather in May: Vallejo, California: normal highs, lows, rain and records for May
Vallejo in May has a normal high of 78°F and a normal low of 51°F, a daily mean of 65°F, rising from 76°F on the 1st to 81°F by the 31st. The month brings 0.80 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 11°C, 20 mm of precipitation in May.
- NOAA stationVallejo
- Station IDUSC00049219
- Location38.10°N 122.19°W
- Elevation341 ft (104 m)
- From the center4 miles
- Population123,475
- Jan 57° 42°
- Feb 63° 45°
- Mar 68° 46°
- Apr 73° 47°
- May 78° 51°
- Jun 83° 54°
- Jul 85° 56°
- Aug 86° 56°
- Sep 86° 57°
- Oct 79° 54°
- Nov 66° 47°
- Dec 58° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Vallejo in May?
The normal high is 78°F and the normal low 51°F, for a daily mean of 64.7°F. May is 4.7°F warmer than April and 3.9°F cooler than June. May is the 6th warmest month of the year in Vallejo and the 8th wettest. Across the month the normal high rises 5°F, from 76°F on May 1 to 81°F on May 31.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 76°F | 49°F | – | – |
| May 8 | 77°F | 50°F | – | – |
| May 15 | 78°F | 51°F | – | – |
| May 22 | 79°F | 52°F | – | – |
| May 31 | 81°F | 53°F | – | – |
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 | 76°F | 49°F | – | – | 13 h 40 min |
| May 2 | 76°F | 49°F | – | – | 13 h 50 min |
| May 3 | 76°F | 49°F | – | – | 13 h 50 min |
| May 4 | 77°F | 49°F | – | – | 13 h 50 min |
| May 5 | 77°F | 49°F | – | – | 13 h 50 min |
| May 6 | 77°F | 49°F | – | – | 14 h |
| May 7 | 77°F | 50°F | – | – | 14 h |
| May 8 | 77°F | 50°F | – | – | 14 h |
| May 9 | 77°F | 50°F | – | – | 14 h |
| May 10 | 78°F | 50°F | – | – | 14 h |
| May 11 | 78°F | 50°F | – | – | 14 h |
| May 12 | 78°F | 50°F | – | – | 14 h 10 min |
| May 13 | 78°F | 51°F | – | – | 14 h 10 min |
| May 14 | 78°F | 51°F | – | – | 14 h 10 min |
| May 15 | 78°F | 51°F | – | – | 14 h 10 min |
| May 16 | 79°F | 51°F | – | – | 14 h 10 min |
| May 17 | 79°F | 51°F | – | – | 14 h 20 min |
| May 18 | 79°F | 51°F | – | – | 14 h 20 min |
| May 19 | 79°F | 51°F | – | – | 14 h 20 min |
| May 20 | 79°F | 52°F | – | – | 14 h 20 min |
| May 21 | 79°F | 52°F | – | – | 14 h 20 min |
| May 22 | 79°F | 52°F | – | – | 14 h 20 min |
| May 23 | 80°F | 52°F | – | – | 14 h 30 min |
| May 24 | 80°F | 52°F | – | – | 14 h 30 min |
| May 25 | 80°F | 52°F | – | – | 14 h 30 min |
| May 26 | 80°F | 52°F | – | – | 14 h 30 min |
| May 27 | 80°F | 53°F | – | – | 14 h 30 min |
| May 28 | 80°F | 53°F | – | – | 14 h 30 min |
| May 29 | 80°F | 53°F | – | – | 14 h 30 min |
| May 30 | 81°F | 53°F | – | – | 14 h 30 min |
| May 31 | 81°F | 53°F | – | – | 14 h 40 min |
- Normal high
- 78°FMay average
- Normal low
- 51°FMay average
- Precipitation
- 0.80 inmonth total
- Days at 90°F or more
- 2
- Daylight
- 13 h 40 min to 14 h 40 minMay 1 to May 31
- Days at 70°F or more
- 25
- Days at 80°F or more
- 8
- Sunshine
- 88%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00049219; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Vallejo in May?
In a normal May in Vallejo, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00049219.
What are the records for May in Vallejo?
The May mean against the 1991-2020 normal of 64.7°F: 2022 65.3°F (+0.6), 2023 61.2°F (−3.5), 2024 64.5°F (−0.2), 2025 65.2°F (+0.5), 2026 64.2°F (−0.5). 2 of 5 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 65.3°F | +0.6°F | 0.01 in |
| 2023 | 61.2°F | −3.5°F | 0.26 in |
| 2024 | 64.5°F | −0.2°F | 0.74 in |
| 2025 | 65.2°F | +0.5°F | 0.05 in |
| 2026 | 64.2°F | −0.5°F | 0.84 in |
Source: recent months: ACIS, station USC00049219. Records and recent months use complete months only.
How does May in Vallejo 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; Vallejo's is 78°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.