Lancaster weather in May: Lancaster, California: normal highs, lows, rain and records for May
Lancaster in May has a normal high of 82°F and a normal low of 53°F, a daily mean of 68°F, rising from 77°F on the 1st to 87°F by the 31st. Measurable precipitation falls on 1 days in a normal May, 0.10 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 12°C, 3 mm of precipitation in May.
- NOAA stationLancaster
- Station IDUSW00003159
- Location34.74°N 118.21°W
- Elevation2,338 ft (713 m)
- Population167,426
- Jan 59° 31°
- Feb 62° 35°
- Mar 67° 40°
- Apr 73° 45°
- May 82° 53°
- Jun 91° 62°
- Jul 98° 67°
- Aug 98° 65°
- Sep 91° 57°
- Oct 80° 46°
- Nov 67° 35°
- Dec 58° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lancaster in May?
The normal high is 82°F and the normal low 53°F, for a daily mean of 67.5°F. May is 8.6°F warmer than April and 8.9°F cooler than June. May is the 5th warmest month of the year in Lancaster and the 10th wettest. Across the month the normal high rises 10°F, from 77°F on May 1 to 87°F on May 31. From one year to the next May's mean temperature typically moves about 4.2°F either way (NOAA's standard deviation), so roughly two Mays in three average between 63°F and 72°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 4%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 77°F | 49°F | 4% | 2% |
| May 8 | 79°F | 51°F | 4% | 1% |
| May 15 | 81°F | 53°F | 3% | 1% |
| May 22 | 84°F | 55°F | 3% | 1% |
| May 31 | 87°F | 57°F | 2% | 1% |
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 | 77°F | 49°F | 4% | 2% | 13 h 30 min |
| May 2 | 77°F | 49°F | 4% | 2% | 13 h 40 min |
| May 3 | 77°F | 50°F | 4% | 2% | 13 h 40 min |
| May 4 | 78°F | 50°F | 4% | 2% | 13 h 40 min |
| May 5 | 78°F | 50°F | 4% | 2% | 13 h 40 min |
| May 6 | 78°F | 51°F | 4% | 2% | 13 h 40 min |
| May 7 | 79°F | 51°F | 4% | 2% | 13 h 40 min |
| May 8 | 79°F | 51°F | 4% | 1% | 13 h 50 min |
| May 9 | 79°F | 52°F | 4% | 1% | 13 h 50 min |
| May 10 | 80°F | 52°F | 4% | 1% | 13 h 50 min |
| May 11 | 80°F | 52°F | 3% | 1% | 13 h 50 min |
| May 12 | 80°F | 52°F | 3% | 1% | 13 h 50 min |
| May 13 | 81°F | 53°F | 3% | 1% | 13 h 50 min |
| May 14 | 81°F | 53°F | 3% | 1% | 14 h |
| May 15 | 81°F | 53°F | 3% | 1% | 14 h |
| May 16 | 82°F | 54°F | 3% | 1% | 14 h |
| May 17 | 82°F | 54°F | 3% | 1% | 14 h |
| May 18 | 82°F | 54°F | 3% | 1% | 14 h |
| May 19 | 83°F | 54°F | 3% | 1% | 14 h |
| May 20 | 83°F | 55°F | 3% | 1% | 14 h |
| May 21 | 83°F | 55°F | 3% | 1% | 14 h 10 min |
| May 22 | 84°F | 55°F | 3% | 1% | 14 h 10 min |
| May 23 | 84°F | 55°F | 3% | 1% | 14 h 10 min |
| May 24 | 84°F | 56°F | 3% | 1% | 14 h 10 min |
| May 25 | 85°F | 56°F | 2% | 1% | 14 h 10 min |
| May 26 | 85°F | 56°F | 2% | 1% | 14 h 10 min |
| May 27 | 85°F | 56°F | 2% | 1% | 14 h 10 min |
| May 28 | 86°F | 57°F | 2% | 1% | 14 h 10 min |
| May 29 | 86°F | 57°F | 2% | 1% | 14 h 20 min |
| May 30 | 86°F | 57°F | 2% | 1% | 14 h 20 min |
| May 31 | 87°F | 57°F | 2% | 1% | 14 h 20 min |
- Normal high
- 82°FMay average
- Normal low
- 53°FMay average
- Precipitation
- 0.10 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 13 h 30 min to 14 h 20 minMay 1 to May 31
- Days at 70°F or more
- 26
- Days at 80°F or more
- 18
- Sunshine
- 89%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003159; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lancaster in May?
On a given May day the chance of 0.01 inch or more is 3% on average, highest around May 1 (4%). In all, 0.10 in falls on 1 days of a normal May.
In a normal May in Lancaster, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003159.
How humid and windy is Lancaster in May?
At 3 p.m. the normal temperature is 84°F with 20% relative humidity and a dew point of 38°F; at 6 a.m. it is 62°F with 44% humidity. The wind averages 15.1 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 62°F | 40°F | 44% | 10.1 mph | 90% |
| 9 a.m. | 76°F | 38°F | 25% | 11.2 mph | 90% |
| noon | 84°F | 36°F | 18% | 14.9 mph | 89% |
| 3 p.m. | 84°F | 38°F | 20% | 20.8 mph | 88% |
| 6 p.m. | 77°F | 41°F | 28% | 21.4 mph | 88% |
| 9 p.m. | 68°F | 41°F | 37% | 15.4 mph | 92% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003159. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Lancaster?
The warmest May temperature on Lancaster's official record (since 1945) is 106°F, on May 28, 2003; the coldest is 32°F, on May 1, 1967. The wettest May brought 1.10 in (1977).
The May mean against the 1991-2020 normal of 67.5°F: 2021 71.3°F (+3.8), 2022 68.8°F (+1.3), 2023 66.8°F (−0.7), 2024 68.0°F (+0.5), 2025 69.6°F (+2.1), 2026 68.3°F (+0.8). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.3°F | +3.8°F | 0.00 in |
| 2022 | 68.8°F | +1.3°F | 0.00 in |
| 2023 | 66.8°F | −0.7°F | 0.12 in |
| 2024 | 68.0°F | +0.5°F | 0.04 in |
| 2025 | 69.6°F | +2.1°F | 0.27 in |
| 2026 | 68.3°F | +0.8°F | 0.00 in |
Source: records: ACIS, NWS threaded record WJFthr; recent months: ACIS, station USW00003159. Records and recent months use complete months only.
How does May in Lancaster 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; Lancaster's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.