Weather on March 18 at Channel Islands

Channel Islands National Park

CAPacific West
Avg High70°F
Avg Low41°F
Warmest202673°F
Coldest202043°F

Based on 56 years of data from Ventura, CA

Planning Your Visit

March 18th in Channel Islands National Park (via Ventura, CA) typically brings pleasant spring weather, with average highs around 70°F and lows near 41°F — a 29°F daily swing. Over 56 years of records, the warmest March 18th was in 2026 (73°F average), while the coldest was 2020 (43°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 13% of March 18th dates historically, with the wettest March 18th recording 5.72" of rain. The last decade has been 3.0°F cooler on this date compared to 20-30 years ago.

The last decade has been 3.0°F cooler on this date compared to 20-30 years ago.

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

Year by Year History

YearHighLowPrecipSnow
202684°F62°F0"--
202559°F33°F0.13"--
202472°F41°F0"--
202366°F36°F0"--
202281°F37°F0"--
202161°F33°F0"--
202058°F29°F0.36"--
201983°F40°F0"--
201859°F31°F0"--
201784°F43°F0"--
201682°F40°F0"--
201580°F49°F0"--
201477°F41°F0"--
201366°F46°F0"--
201254°F36°F----
201163°F36°F----
201075°F46°F----
200981°F46°F----
200868°F37°F----
200755°F48°F----
200659°F36°F----
200554°F46°F----
200479°F45°F----
200368°F45°F----
200259°F34°F----
200177°F46°F----
200084°F43°F0"0"
199965°F45°F0"0"
199871°F52°F0"0"
199788°F41°F0"0"
199678°F44°F0"0"
199572°F50°F0"0"
199476°F45°F0"0"
199375°F45°F0"0"
199267°F40°F0"0"
199155°F38°F5.72"0"
199082°F42°F0"0"
198975°F39°F0"0"
198883°F39°F0"0"
198770°F--0"0"
198669°F37°F0"0"
198565°F37°F0.08"0"
198477°F40°F0"0"
198358°F45°F1.27"0"
198250°F37°F1.37"0"
198169°F37°F0"0"
198067°F40°F0"0"
197962°F39°F0.1"0"
197885°F49°F0"0"
197766°F32°F0"0"
197672°F42°F0"0"
197575°F36°F0"0"
197467°F42°F0"0"
197365°F42°F0"0"
197272°F50°F0"0"
197178°F41°F0"0"

March 18 at Nearby Parks

Holiday Weather at Channel Islands

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

Explore More at Channel Islands

See historical weather for other dates

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March 18 Weather at Channel Islands National Park - Historical Data