Get the monthly weather forecast for Temecula, CA, including daily high/low, historical averages, to help you plan ahead.

May weather in Temecula California, United States. Daily high temperatures increase by 3°F, from 74°F to 78°F, rarely falling below 64°F or exceeding 86°F.

Extremes ; High Temperature: 95.7°F (35.4°C), at 1:44PM May 14 ; Low Temperature: 42.1°F (5.6°C), at 6:18AM May 11 ; Month Average: 64.1°F (17.8°C), for 31 days.

Weather.com brings you the most accurate monthly weather forecast for Temecula, CA with average/record and high/low temperatures, precipitation and more.

Temecula, California Climate Summary ; April, 74.5°F (23.6°C), 49.0°F (9.4°C) ; May, 77.5°F (25.3°C), 53.7°F (12.1°C) ; June, 84.3°F (29.1°C), 57.6°F (14.2°C) ...

The temperatures in Temecula in May are comfortable with low of 51°F and and high up to 73°F. There is little to no rain in Temecula during May, ...

Temecula weather in May 2025 · 1 May. +24°+13° · 2 May. +25°+13° · 3 May. +27°+13° · 4 May. +27°+14° · 5 May. +24°+14° · 6 May. +22°+14° · 7 May. +22°+13° · 8 May. +22° ...

May weather forecast in Temecula ; 1 May. Wednesday. +22° ; 2 May. Thursday. +23° ; 3 May. Friday. +22° ; 4 May. Saturday. +19° ; 5 May. Sunday. +16°.

The hot season lasts for 3.0 months, from June 23 to September 23, with an average daily high temperature above 84°F. The hottest month of the year in Temecula ...