7-Day Weather Forecast

Fullerton 7-Day Weather Forecast

Fullerton, United States

Aug 1 – Aug 7, 2026 as of 04:05

Week at a glance

Week high +35°C +95°F Fri, 7 Aug

Week low +17°C +63°F Sat, 1 Aug

Days with rain chance 6 Mon, 3 Aug · 85%

Avg. high +30°C +86°F

Fullerton — 7-Day Weather Forecast

Weather FAQ for Fullerton

What is the temperature in Fullerton?

The temperature in Fullerton is +31°C.

What does it feel like in Fullerton?

It feels like +17°C in Fullerton.

What are the high and low in Fullerton?

The high is +31°C and the low is +17°C in Fullerton.

What is the chance of rain in Fullerton?

There is a 0% chance of precipitation in Fullerton.

How windy is it in Fullerton?

Winds are around 3.6 m/s from the S in Fullerton.

What is the UV index in Fullerton?

The UV index is 7 in Fullerton.

Fullerton weather forecast day by day

Next 7 days in Fullerton with daily highs, lows, rain chance and wind.

Saturday, 1 August weather in Fullerton

On Saturday, 1 August, the Fullerton forecast calls for Overcast, with a high near 31°C and a low around 17°C (feeling like 32°C). UV index peaks near 7 — sun protection is advised. Typical daytime humidity is around 55%.

Sunday, 2 August weather in Fullerton

On Sunday, 2 August, the Fullerton forecast calls for Rainy, with a high near 31°C and a low around 21°C (feeling like 31°C). About 1.2 mm of precipitation is expected. Typical daytime humidity is around 60%.

Monday, 3 August weather in Fullerton

On Monday, 3 August, the Fullerton forecast calls for Rainy, with a high near 28°C and a low around 22°C (feeling like 31°C). About 7.5 mm of precipitation is expected. Typical daytime humidity is around 83%.

Tuesday, 4 August weather in Fullerton

On Tuesday, 4 August, the Fullerton forecast calls for Rainy, with a high near 29°C and a low around 21°C (feeling like 32°C). About 2.4 mm of precipitation is expected. Typical daytime humidity is around 70%.

Wednesday, 5 August weather in Fullerton

On Wednesday, 5 August, the Fullerton forecast calls for Rainy, with a high near 27°C and a low around 22°C (feeling like 31°C). About 3.9 mm of precipitation is expected. Typical daytime humidity is around 86%.

Thursday, 6 August weather in Fullerton

On Thursday, 6 August, the Fullerton forecast calls for Rainy, with a high near 29°C and a low around 22°C (feeling like 32°C). About 2.1 mm of precipitation is expected. Typical daytime humidity is around 78%.

Friday, 7 August weather in Fullerton

On Friday, 7 August, the Fullerton forecast calls for Rainy, with a high near 35°C and a low around 21°C (feeling like 38°C). About 2.7 mm of precipitation is expected. UV index peaks near 7 — sun protection is advised. Typical daytime humidity is around 54%.