Weather on September 18 at Channel Islands

Channel Islands National Park

CAPacific West
Avg High85°F
Avg Low53°F
Warmest198484°F
Coldest199953°F

Based on 55 years of data from Ventura, CA

Planning Your Visit

September 18th in Channel Islands National Park (via Ventura, CA) typically brings warm fall weather, with average highs around 85°F and lows near 53°F — a 32°F daily swing. Over 55 years of records, the warmest September 18th was in 1984 (84°F average), while the coldest was 1999 (53°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 18th dates historically. Temperatures on this date have remained relatively stable over the past several decades.

Temperatures on this date have remained relatively stable over the past several decades.

Planning for September 18th in Channel Islands? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecipSnow
202595°F64°F0.28"--
202474°F42°F0"--
202371°F61°F0"--
202280°F54°F0"--
202179°F42°F0"--
202097°F57°F0"--
201984°F48°F0"--
201889°F42°F0"--
201776°F49°F0"--
201693°F49°F0"--
201584°F49°F0"--
201497°F56°F0"--
201383°F48°F0"--
201288°F52°F----
201186°F50°F----
201082°F48°F----
200993°F57°F----
200886°F57°F----
200773°F50°F----
200686°F50°F----
200575°F50°F----
200475°F54°F----
200386°F52°F----
200277°F55°F----
200177°F54°F----
200097°F57°F----
199965°F41°F0"0"
199887°F52°F0"0"
199795°F56°F0"0"
199683°F49°F0"0"
199586°F50°F0"0"
1994--54°F0"0"
199379°F45°F0"0"
199292°F58°F0"0"
199195°F55°F0"0"
199080°F57°F0"0"
198982°F59°F0"0"
198876°F50°F0"0"
198785°F55°F0"0"
198684°F56°F0"0"
198571°F45°F0"0"
1984101°F68°F0"0"
198391°F58°F0"0"
198282°F62°F0"0"
198194°F55°F0"0"
198091°F56°F0"0"
1979105°F56°F0"0"
197880°F43°F0"0"
197785°F52°F0"0"
197679°F51°F0"0"
197590°F59°F0"0"
197487°F52°F0"0"
197377°F49°F0"0"
197280°F50°F0"0"
197184°F57°F0"0"

September 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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