Weather on December 21 at Channel Islands

Channel Islands National Park

CAPacific West
Avg High66°F
Avg Low36°F
Warmest200562°F
Coldest199039°F

Based on 53 years of data from Ventura, CA

Planning Your Visit

December 21st in Channel Islands National Park (via Ventura, CA) typically brings mild winter weather, with average highs around 66°F and lows near 36°F — a 30°F daily swing. Over 53 years of records, the warmest December 21st was in 2005 (62°F average), while the coldest was 1990 (39°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 6% of December 21st dates historically, with the wettest December 21st recording 7.92" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.

Planning for December 21st in Channel Islands? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202570°F40°F0"--
202474°F33°F0"--
202359°F51°F7.92"--
202269°F32°F0"--
202165°F33°F0"--
202087°F32°F0"--
201975°F35°F0"--
201761°F26°F0"--
201677°F32°F0"--
201559°F30°F0"--
201466°F43°F0"--
201361°F32°F0"--
201263°F28°F----
201163°F34°F----
201053°F48°F0.84"0"
200963°F43°F----
200864°F36°F----
200754°F32°F----
200659°F30°F----
200579°F46°F----
200464°F37°F----
200364°F39°F----
200254°F37°F----
200155°F39°F----
200072°F34°F----
199979°F36°F0"0"
199855°F23°F0"0"
199769°F34°F0"0"
199566°F32°F0"0"
199480°F34°F0"0"
199372°F28°F0"0"
199264°F28°F0"0"
199175°F34°F0"0"
199047°F32°F0"0"
198965°F33°F0"0"
198861°F42°F3.23"0"
198767°F33°F0"0"
198672°F35°F0"0"
198582°F36°F0"0"
198460°F31°F0"0"
198362°F31°F0"0"
198259°F34°F0"0"
198165°F39°F0"0"
198077°F39°F0"0"
197965°F48°F0"0"
197865°F31°F0"0"
197769°F49°F0"0"
197670°F33°F0"0"
197567°F39°F0"0"
197471°F38°F0"0"
197372°F38°F0"0"
197278°F42°F0"0"
197159°F34°F0"0"

December 21 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

Back to Channel Islands