NOAA GHCND · LIVE

Weather on October 27

Simi Valley, CA

55 Years of Data

Avg High
78°F
Avg Low
58°F
Warmest
2003
83°F avg
Coldest
2004
53°F avg

About This Date

October 27th in Simi Valley, CA typically brings pleasant fall weather, with average highs around 78°F and lows near 58°F. Over 31 years of records, the warmest October 27th was in 2003 (83°F average), while the coldest was 2004 (53°F) — a 30°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 7.4°F warmer on this date compared to 20-30 years ago.

The last decade has been 7.4°F warmer on this date compared to 20-30 years ago.

Planning for October 27th in Simi Valley, CA? Great weather for outdoor activities.

Warming Trend
2.0°F per decade on this date
YearHighLowAvgPrecipSnow
202578°53°66°
202479°63°71°
202371°53°62°
202276°52°64°
202184°62°73°
202075°59°67°
201968°55°62°
201893°71°82°
201794°71°82°
201683°61°72°
201582°66°74°
201478°55°67°
201382°51°67°
201290°70°80°
201179°52°65°
201073°61°67°
200973°51°62°
200891°57°74°
200779°59°69°
200684°68°76°
200564°52°58°
2004coldest55°50°53°
2003warmest95°72°83°
200268°52°60°
200173°52°62°
200065°49°57°
199977°54°65°
199874°54°64°
199776°55°65°
199666°53°60°
199585°65°75°
31 years of data from SIMI VALLEY CALIFORNIA

Simi Valley, CA Temperature Range by Month

Average monthly highs and lows. The shaded band shows the typical daily temperature range.

40°50°60°70°80°90°100°JFMAMJJASOND
Avg high Avg low

Simi Valley, CA Daily Temperature Calendar

Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.

151015202531JanFebMarAprMayJunJulAugSepOctNovDec
Cooler
Hotter
20°40°60°80°100°

Best Time to Visit Simi Valley, CA

Most pleasant months in Simi Valley, CA: January, March, April, May, June, October, November.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal

Browse Weather History

Weather data provided by NOAA Climate Data Online. Not for critical planning.

📬 Free weekly newsletter

This week in weather history.

Five notable weather anniversaries from the week ahead — deadliest tornadoes, record temps, historic storms — every Sunday. No spam, unsubscribe anytime.

4,200+ readers · Sunday delivery