Climate averages 1991–2020
Lancaster weather
in August.
A very hot, very dry month: the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Lancaster: daytime highs average 34.8°C and nights cool to about 19.5°C. By daytime temperature it is the warmest month of the year.
Expect about 1.4 mm of rain on fewer than one day, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 27 min on an average August day.
The nearest other city in this atlas is Palmdale (13 km away). In August its highs average 34.1°C, 0.7°C cooler than Lancaster, with 12 mm of rain.
Among the 498 cities listed in the United States, Lancaster ranks 37th of 498 for the warmest August highs and joint 74th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Lancaster is 4.9°C warmer than that mean.
From August to September, average highs fall by 3.3°C to 31.5°C, and monthly rainfall rises from 1.4 mm to 3.0 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Lancaster climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.0°C4.5°C | 4.5°C | 41 | 4.6 | 10.110 h |
| February | 15.3°C5.0°C | 5.0°C | 47 | 5.0 | 10.911 h |
| March | 18.6°C6.7°C | 6.7°C | 31 | 4.0 | 11.912 h |
| April | 22.1°C8.7°C | 8.7°C | 11 | 1.9 | 13.013 h |
| May | 26.7°C12.3°C | 12.3°C | 3.6 | 1.0 | 14.014 h |
| June | 31.6°C16.0°C | 16.0°C | 1.3 | 0.3 | 14.414 h |
| July | 34.7°C19.4°C | 19.4°C | 3.8 | 1.0 | 14.214 h |
| August, selected | 34.8°C19.5°C | 19.5°C | 1.4 | 0.5 | 13.513 h |
| September | 31.5°C17.4°C | 17.4°C | 3.0 | 0.6 | 12.412 h |
| October | 25.0°C12.9°C | 12.9°C | 8.3 | 1.1 | 11.311 h |
| November | 18.3°C7.8°C | 7.8°C | 9.7 | 1.9 | 10.410 h |
| December | 13.3°C4.1°C | 4.1°C | 30 | 3.6 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Palmdale in AugustUnited States · 13 kmHigh 34.1°C · Low 19.7°C · 12 mm rain
- Santa Clarita in AugustUnited States · 50 kmHigh 32.6°C · Low 19.6°C · 0.7 mm rain
- Valencia, United States in AugustUnited States · 52 kmHigh 32.6°C · Low 19.6°C · 0.7 mm rain
- Burbank in AugustUnited States · 60 kmHigh 33.3°C · Low 19.6°C · 0.9 mm rain
- Pasadena (California), United States in AugustUnited States · 61 kmHigh 31.7°C · Low 17.9°C · 0.9 mm rain
- Glendale (California), United States in AugustUnited States · 63 kmHigh 31.7°C · Low 18.2°C · 0.9 mm rain
- El Monte in AugustUnited States · 71 kmHigh 32.9°C · Low 19.2°C · 0.5 mm rain
- West Covina in AugustUnited States · 72 kmHigh 32.7°C · Low 19.1°C · 0.5 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Lancaster) is explained once on the Lancaster year overview and on the Sources, method and limits page.