Fallbrook weather in May: Fallbrook, California: normal highs, lows, rain and records for May
Fallbrook in May has a normal high of 75°F and a normal low of 53°F, a daily mean of 64°F, rising from 74°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 5 days in a normal May, 0.36 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 12°C, 9 mm of precipitation in May.
- NOAA stationFallbrook (5 mi NE)
- Station IDUSW00053151
- Location33.44°N 117.19°W
- Elevation1,140 ft (348 m)
- From the center5 miles
- Population (census place)32,467
- Jan 68° 47°
- Feb 67° 46°
- Mar 70° 48°
- Apr 72° 51°
- May 75° 53°
- Jun 81° 56°
- Jul 87° 60°
- Aug 89° 62°
- Sep 88° 62°
- Oct 83° 58°
- Nov 74° 52°
- Dec 67° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fallbrook in May?
The normal high is 75°F and the normal low 53°F, for a daily mean of 64.1°F. May is 2.8°F warmer than April and 4.2°F cooler than June. May is the 6th warmest month of the year in Fallbrook and the 8th wettest. Across the month the normal high rises 3°F, from 74°F on May 1 to 77°F on May 31. From one year to the next May's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Mays in three average between 62°F and 66°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 15%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 74°F | 52°F | 14% | 5% |
| May 8 | 74°F | 52°F | 15% | 5% |
| May 15 | 75°F | 53°F | 15% | 5% |
| May 22 | 76°F | 53°F | 14% | 4% |
| May 31 | 77°F | 54°F | 12% | 2% |
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 | 52°F | 14% | 5% | 13 h 30 min |
| May 2 | 74°F | 52°F | 14% | 5% | 13 h 30 min |
| May 3 | 74°F | 52°F | 14% | 5% | 13 h 30 min |
| May 4 | 74°F | 52°F | 14% | 5% | 13 h 30 min |
| May 5 | 74°F | 52°F | 14% | 5% | 13 h 40 min |
| May 6 | 74°F | 52°F | 14% | 5% | 13 h 40 min |
| May 7 | 74°F | 52°F | 15% | 5% | 13 h 40 min |
| May 8 | 74°F | 52°F | 15% | 5% | 13 h 40 min |
| May 9 | 74°F | 53°F | 15% | 5% | 13 h 40 min |
| May 10 | 75°F | 53°F | 15% | 5% | 13 h 40 min |
| May 11 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 12 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 13 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 14 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 15 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 16 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 17 | 75°F | 53°F | 15% | 5% | 13 h 50 min |
| May 18 | 75°F | 53°F | 15% | 4% | 14 h |
| May 19 | 76°F | 53°F | 14% | 4% | 14 h |
| May 20 | 76°F | 53°F | 14% | 4% | 14 h |
| May 21 | 76°F | 53°F | 14% | 4% | 14 h |
| May 22 | 76°F | 53°F | 14% | 4% | 14 h |
| May 23 | 76°F | 53°F | 14% | 4% | 14 h |
| May 24 | 76°F | 53°F | 14% | 3% | 14 h |
| May 25 | 76°F | 53°F | 13% | 3% | 14 h 10 min |
| May 26 | 76°F | 54°F | 13% | 3% | 14 h 10 min |
| May 27 | 77°F | 54°F | 13% | 3% | 14 h 10 min |
| May 28 | 77°F | 54°F | 13% | 3% | 14 h 10 min |
| May 29 | 77°F | 54°F | 12% | 3% | 14 h 10 min |
| May 30 | 77°F | 54°F | 12% | 2% | 14 h 10 min |
| May 31 | 77°F | 54°F | 12% | 2% | 14 h 10 min |
- Normal high
- 75°FMay average
- Normal low
- 53°FMay average
- Precipitation
- 0.36 inmonth total
- Days with precipitation
- 50.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 13 h 30 min to 14 h 10 minMay 1 to May 31
- Days at 70°F or more
- 24
- Days at 80°F or more
- 8
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053151; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fallbrook in May?
On a given May day the chance of 0.01 inch or more is 14% on average, highest around May 15 (15%). In all, 0.36 in falls on 5 days of a normal May.
In a normal May in Fallbrook, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053151.
What are the records for May in Fallbrook?
The May mean against the 1991-2020 normal of 64.1°F: 2021 64.3°F (+0.2), 2022 64.7°F (+0.6), 2023 60.8°F (−3.3), 2024 62.3°F (−1.8), 2025 66.0°F (+1.9), 2026 65.5°F (+1.5). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.3°F | +0.2°F | 0.14 in |
| 2022 | 64.7°F | +0.6°F | 0.04 in |
| 2023 | 60.8°F | −3.3°F | 1.07 in |
| 2024 | 62.3°F | −1.8°F | 0.25 in |
| 2025 | 66.0°F | +1.9°F | 0.32 in |
| 2026 | 65.5°F | +1.5°F | 0.16 in |
Source: recent months: ACIS, station USW00053151. Records and recent months use complete months only.
How does May in Fallbrook 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; Fallbrook's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.