Climate

Pleasanton weather by month

Average highs, lows, rain and snow for every month, from 30 years of weather records.

Average temperatures

Best time to visit: May, June, October, when highs are mild and rain is lightest.

Month	High	Low	Rain	Wet days
January	57°F	38°F	2.8 in	10
February	61°F	40°F	2.9 in	10
March	65°F	42°F	2.2 in	10
April	69°F	45°F	1.1 in	6
May	75°F	49°F	0.60 in	3
June	83°F	54°F	0.10 in	1
July	88°F	57°F	0.00 in	0
August	88°F	57°F	0.10 in	0
September	85°F	55°F	0.10 in	1
October	78°F	49°F	0.80 in	3
November	66°F	42°F	1.7 in	7
December	58°F	38°F	2.8 in	10

NOAA U.S. Climate Normals 1991–2020, Livermore Muni Ap, Ca Us (3.8 mi away, 393 ft). Wet days: days with at least 0.01 in of precipitation.

What is the hottest month in Pleasanton?

July, with an average high of 88°F and low of 57°F.

What is the coldest month in Pleasanton?

December, with an average low of 38°F and high of 58°F.

When does it rain most in Pleasanton?

February is the wettest month, averaging 2.9 in of precipitation; the year totals about 15.2 inches.

What is the best time to visit Pleasanton?

For mild weather (highs between 65°F and 85°F) with the least rain, May, June, October.

Where do these numbers come from?

NOAA’s 1991–2020 U.S. Climate Normals for the Livermore Muni Ap weather station, 3.8 miles from downtown: 30-year averages, not a forecast.