Weather on July 21 at Channel Islands

Channel Islands National Park

CAPacific West
Avg High88°F
Avg Low56°F
Warmest198882°F
Coldest198763°F

Based on 54 years of data from Ventura, CA

Planning Your Visit

July 21st in Channel Islands National Park (via Ventura, CA) typically brings warm summer weather, with average highs around 88°F and lows near 56°F — a 32°F daily swing. Over 54 years of records, the warmest July 21st was in 1988 (82°F average), while the coldest was 1987 (63°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 2% of July 21st dates historically. 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 July 21st in Channel Islands? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecipSnow
202581°F57°F0"--
202498°F55°F0"--
202398°F56°F0"--
202293°F53°F0"--
202196°F57°F0"--
202086°F51°F0"--
201982°F51°F0"--
201894°F63°F0"--
201792°F52°F0"--
2016100°F54°F0"--
201585°F62°F0.15"--
201486°F56°F0"--
201386°F63°F0"--
201291°F55°F----
201179°F55°F----
201084°F54°F0"0"
200993°F63°F----
200886°F54°F----
200786°F55°F----
200699°F64°F----
200593°F68°F----
200490°F59°F----
200388°F63°F----
200275°F55°F----
200181°F50°F----
200084°F55°F----
199987°F49°F0"0"
199885°F61°F0"0"
199786°F57°F0"0"
199692°F52°F0"0"
199588°F53°F0"0"
199488°F61°F0"0"
199378°F54°F0"0"
199180°F50°F0"0"
199083°F60°F0"0"
198983°F59°F0"0"
198897°F67°F0"0"
198779°F48°F0"0"
198678°F58°F0"0"
198589°F58°F0"0"
198482°F60°F0"0"
198390°F47°F0"0"
198295°F55°F0"0"
198192°F51°F0"0"
198089°F49°F0"0"
197986°F--0"0"
197892°F49°F0"0"
197794°F53°F0"0"
197690°F54°F0"0"
197585°F53°F0"0"
197489°F59°F0"0"
197378°F51°F0"0"
197277°F61°F0"0"
197192°F61°F0"0"

July 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

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