Weather on March 18 at Yosemite

Yosemite National Park

CAPacific West4,000 ft elevation
Avg High64°F
Avg Low40°F
Warmest202670°F
Coldest199135°F

Based on 43 years of data from Mariposa, CA

Elevation Note: Yosemite sits at 4,000 ft. Expect temperatures 14°F cooler than the data shown below, which comes from Mariposa, CA at a lower elevation.

Planning Your Visit

March 18th in Yosemite National Park (via Mariposa, CA) typically brings mild spring weather, with average highs around 64°F and lows near 40°F. Over 43 years of records, the warmest March 18th was in 2026 (70°F average), while the coldest was 1991 (35°F) — a 35°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.

The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.

Planning for March 18th in Yosemite? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202686°F54°F----
202555°F33°F----
202469°F44°F----
202364°F40°F----
202269°F40°F----
202161°F44°F----
202052°F31°F----
201974°F44°F----
201852°F29°F----
201770°F51°F----
201671°F45°F----
201569°F45°F----
201465°F40°F----
201366°F40°F----
201247°F30°F----
201151°F32°F----
201068°F43°F----
200967°F44°F----
200865°F37°F----
200773°F49°F----
200650°F32°F----
200561°F45°F----
200482°F51°F----
200359°F32°F----
200250°F26°F----
200173°F42°F----
200069°F43°F----
199963°F37°F----
199867°F44°F----
199779°F43°F----
199675°F47°F----
199560°F42°F----
199466°F46°F----
199363°F44°F----
199260°F37°F----
199138°F33°F----
197753°F31°F0"0"
197678°F46°F0"0"
197553°F35°F0"0"
197469°F42°F0"0"
197351°F31°F0"0"
197281°F48°F0"0"
197161°F36°F0"0"

March 18 at Nearby Parks

Holiday Weather at Yosemite

Official NPS WebsiteVisit nps.gov/yose for park information, alerts, and reservations

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