Shasta weather in May: Shasta, California: normal highs, lows, rain and records for May
Shasta in May has a normal high of 79°F and a normal low of 55°F, a daily mean of 67°F, rising from 74°F on the 1st to 83°F by the 31st. Measurable precipitation falls on 8 days in a normal May, 2.93 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 13°C, 74 mm of precipitation in May.
- NOAA stationShasta Dam
- Station IDUSC00048135
- Location40.71°N 122.42°W
- Elevation1,075 ft (328 m)
- From the center9 miles
- Population (census place)1,330
- Jan 55° 41°
- Feb 59° 42°
- Mar 63° 44°
- Apr 70° 48°
- May 79° 55°
- Jun 88° 63°
- Jul 97° 69°
- Aug 96° 68°
- Sep 90° 63°
- Oct 78° 55°
- Nov 62° 46°
- Dec 54° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Shasta in May?
The normal high is 79°F and the normal low 55°F, for a daily mean of 67.1°F. May is 8.5°F warmer than April and 8.5°F cooler than June. May is the 5th warmest month of the year in Shasta and the 8th wettest. Across the month the normal high rises 9°F, from 74°F on May 1 to 83°F on May 31. From one year to the next May's mean temperature typically moves about 4.1°F either way (NOAA's standard deviation), so roughly two Mays in three average between 63°F and 71°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 74°F | 51°F | 28% | 17% |
| May 8 | 77°F | 53°F | 27% | 16% |
| May 15 | 79°F | 55°F | 25% | 16% |
| May 22 | 81°F | 57°F | 23% | 15% |
| May 31 | 83°F | 59°F | 19% | 13% |
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 | 74°F | 51°F | 28% | 17% | 13 h 50 min |
| May 2 | 75°F | 52°F | 28% | 17% | 14 h |
| May 3 | 75°F | 52°F | 28% | 17% | 14 h |
| May 4 | 75°F | 52°F | 27% | 17% | 14 h |
| May 5 | 76°F | 53°F | 27% | 17% | 14 h |
| May 6 | 76°F | 53°F | 27% | 17% | 14 h 10 min |
| May 7 | 76°F | 53°F | 27% | 16% | 14 h 10 min |
| May 8 | 77°F | 53°F | 27% | 16% | 14 h 10 min |
| May 9 | 77°F | 54°F | 26% | 16% | 14 h 10 min |
| May 10 | 77°F | 54°F | 26% | 16% | 14 h 10 min |
| May 11 | 78°F | 54°F | 26% | 16% | 14 h 20 min |
| May 12 | 78°F | 54°F | 26% | 16% | 14 h 20 min |
| May 13 | 78°F | 55°F | 26% | 16% | 14 h 20 min |
| May 14 | 78°F | 55°F | 26% | 16% | 14 h 20 min |
| May 15 | 79°F | 55°F | 25% | 16% | 14 h 20 min |
| May 16 | 79°F | 56°F | 25% | 16% | 14 h 30 min |
| May 17 | 79°F | 56°F | 25% | 16% | 14 h 30 min |
| May 18 | 80°F | 56°F | 25% | 16% | 14 h 30 min |
| May 19 | 80°F | 56°F | 24% | 15% | 14 h 30 min |
| May 20 | 80°F | 57°F | 24% | 15% | 14 h 30 min |
| May 21 | 80°F | 57°F | 24% | 15% | 14 h 40 min |
| May 22 | 81°F | 57°F | 23% | 15% | 14 h 40 min |
| May 23 | 81°F | 57°F | 23% | 15% | 14 h 40 min |
| May 24 | 81°F | 58°F | 23% | 15% | 14 h 40 min |
| May 25 | 81°F | 58°F | 22% | 14% | 14 h 40 min |
| May 26 | 82°F | 58°F | 22% | 14% | 14 h 40 min |
| May 27 | 82°F | 58°F | 21% | 14% | 14 h 50 min |
| May 28 | 82°F | 59°F | 21% | 14% | 14 h 50 min |
| May 29 | 83°F | 59°F | 20% | 13% | 14 h 50 min |
| May 30 | 83°F | 59°F | 20% | 13% | 14 h 50 min |
| May 31 | 83°F | 59°F | 19% | 13% | 14 h 50 min |
- Normal high
- 79°FMay average
- Normal low
- 55°FMay average
- Precipitation
- 2.93 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 13 h 50 min to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 24
- Days at 80°F or more
- 15
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00048135; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Shasta in May?
On a given May day the chance of 0.01 inch or more is 24% on average, highest around May 1 (28%). In all, 2.93 in falls on 8 days of a normal May, 1 of them with an inch or more.
In a normal May in Shasta, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00048135.
What are the records for May in Shasta?
The warmest May temperature on this station's record (since 1943) is 107°F, on May 19, 1973; the coldest is 35°F, on May 3, 1950. The wettest May brought 12.76 in (1990).
The May mean against the 1991-2020 normal of 67.1°F: 2021 72.7°F (+5.6), 2022 66.8°F (−0.3), 2023 67.7°F (+0.6), 2024 68.0°F (+0.9), 2025 71.0°F (+4.0), 2026 68.2°F (+1.1). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 72.7°F | +5.6°F | 0.00 in |
| 2022 | 66.8°F | −0.3°F | 0.42 in |
| 2023 | 67.7°F | +0.6°F | 3.01 in |
| 2024 | 68.0°F | +0.9°F | 1.61 in |
| 2025 | 71.0°F | +4.0°F | 0.57 in |
| 2026 | 68.2°F | +1.1°F | 3.18 in |
Source: records: ACIS, station USC00048135; recent months: ACIS, station USC00048135. Records and recent months use complete months only.
How does May in Shasta 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; Shasta's is 79°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.