Mariposa and Yosemite Valley Weather for Sunday, October 18, 2026

Note: Valid at 6:00 A.M.

Sunny and slightly cooler with a high temp of around 82 degrees and a low temp of around 59 degrees.

 Yosemite Valley: Sunny and cooler with a high temp of around 78 degrees and a low temp of around 43 degrees. Possible 15 mph wind gusts today.

 Mariposa weather for Monday: Mostly sunny and much cooler with a high temp of around 75 degrees and a low temp of around 55 degrees.

 Future high temps for Mariposa: Tue.: 71 degrees. Wed.: 67 degrees. Thu.: 64 degrees.

 Mariposa’s future rain chances:
Tue. Night: 20% chance of late rain.
Wed.: 50%/70% chance of daytime/evening rain with up to 1.00” possible.
Thu.: 50% chance of rain with up to 0.25” possible.