The year at a glance
Averages from 30 years of climate history, 1991-2020
| Acton | Metric | Lancaster |
|---|---|---|
| 293 days | Sunny daysclear or partly cloudy skies | 306 days |
| 13 in | Precipitationper year | 8 in |
| 40 days | Wet daysrain or snow per year | 26 days |
| 12 in | Snowfallper year | 5 in |
| 115 days | Hot daysabove 90 °F | 111 days |
| 41 days | Freezing nightsat or below 32 °F | 61 days |
| 51% | Humidityaverage relative | 47% |
| 64 °F | Average temperatureyear round | 62 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Acton high | 59 | 63 | 69 | 75 | 83 | 92 | 98 | 98 | 92 | 80 | 67 | 58 |
| Lancaster high | 59 | 62 | 67 | 73 | 82 | 91 | 98 | 98 | 92 | 80 | 67 | 58 |
| Acton low | 35 | 37 | 41 | 46 | 53 | 60 | 67 | 66 | 60 | 50 | 39 | 34 |
| Lancaster low | 32 | 35 | 40 | 45 | 53 | 61 | 67 | 65 | 58 | 47 | 36 | 31 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Acton | 2.5 | 3.0 | 2.1 | 0.8 | 0.4 | 0.1 | 0.3 | 0.2 | 0.3 | 0.6 | 0.7 | 1.9 |
| Lancaster | 1.6 | 1.9 | 1.2 | 0.5 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 | 0.4 | 1.2 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Acton | 19 | 17 | 20 | 23 | 25 | 28 | 29 | 30 | 29 | 27 | 24 | 21 |
| Lancaster | 20 | 19 | 23 | 26 | 28 | 29 | 29 | 30 | 29 | 28 | 25 | 22 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Acton vs another city
- Acton vs Palmdale, CA
- Acton vs Quartz Hill, CA
- Acton vs Sun Village, CA
- Acton vs La Crescenta-Montrose, CA
- Acton vs Santa Clarita, CA
- Acton vs New York, NY
- Acton vs Los Angeles, CA
- Acton vs Chicago, IL
- Acton vs Houston, TX
- Acton vs Phoenix, AZ
- Acton vs Philadelphia, PA
Lancaster vs another city
- Lancaster vs Quartz Hill, CA
- Lancaster vs Palmdale, CA
- Lancaster vs Rosamond, CA
- Lancaster vs Sun Village, CA
- Lancaster vs Lake Los Angeles, CA
- Lancaster vs New York, NY
- Lancaster vs Los Angeles, CA
- Lancaster vs Chicago, IL
- Lancaster vs Houston, TX
- Lancaster vs Phoenix, AZ
- Lancaster vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).