Climate averages 1991–2020
Pleasanton weather
in April.
A mild, fairly dry month: the 7th warmest and the 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Pleasanton: daytime highs average 19.5°C and nights cool to about 8.5°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 32 mm of rain on roughly 5 days, which makes April a fairly dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 09 min on an average April day.
The nearest other city in this atlas is Livermore (10 km away). In April its highs average 19.6°C, about as warm as Pleasanton, with 32 mm of rain.
Among the 498 cities listed in the United States, Pleasanton ranks joint 256th of 498 for the warmest April highs and joint 94th of 498 for the driest April (rainfall, lowest first). The mean April high of those 498 cities is 19.4°C; Pleasanton is 0.2°C warmer than that mean.
From April to May, average highs rise by 3.3°C to 22.9°C, and monthly rainfall falls from 32 mm to 16 mm.
The annual picture
April 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
Pleasanton climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.1°C5.5°C | 5.5°C | 86 | 9.4 | 9.910 h |
| February | 15.4°C6.3°C | 6.3°C | 86 | 8.9 | 10.811 h |
| March | 17.3°C7.5°C | 7.5°C | 67 | 8.7 | 11.912 h |
| April, selected | 19.5°C8.5°C | 8.5°C | 32 | 5.2 | 13.113 h |
| May | 22.9°C10.6°C | 10.6°C | 16 | 3.0 | 14.214 h |
| June | 26.6°C12.9°C | 12.9°C | 3.9 | 0.8 | 14.715 h |
| July | 29.0°C14.7°C | 14.7°C | 1.0 | 0.2 | 14.514 h |
| August | 28.9°C14.8°C | 14.8°C | 2.1 | 0.3 | 13.614 h |
| September | 28.0°C14.4°C | 14.4°C | 1.7 | 0.5 | 12.512 h |
| October | 23.9°C12.4°C | 12.4°C | 21 | 2.8 | 11.311 h |
| November | 17.8°C8.7°C | 8.7°C | 40 | 5.6 | 10.210 h |
| December | 13.9°C5.8°C | 5.8°C | 79 | 8.8 | 9.610 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
April in nearby cities
- Livermore in AprilUnited States · 10 kmHigh 19.6°C · Low 8.1°C · 32 mm rain
- Union City in AprilUnited States · 15 kmHigh 19.1°C · Low 9.2°C · 40 mm rain
- San Ramon in AprilUnited States · 16 kmHigh 19.3°C · Low 8.5°C · 33 mm rain
- Fremont in AprilUnited States · 16 kmHigh 18.9°C · Low 9.3°C · 40 mm rain
- Hayward in AprilUnited States · 18 kmHigh 18.9°C · Low 9.0°C · 33 mm rain
- Milpitas in AprilUnited States · 26 kmHigh 19.4°C · Low 9.5°C · 40 mm rain
- Sunnyvale in AprilUnited States · 36 kmHigh 18.6°C · Low 9.2°C · 46 mm rain
- Mountain View in AprilUnited States · 36 kmHigh 18.3°C · Low 9.3°C · 40 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 Pleasanton) is explained once on the Pleasanton year overview and on the Sources, method and limits page.
Livermore lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.