Weather on June 18

San Bernardino, CA

55 Years of Data

Avg High
90°F
Avg Low
58°F
Warmest
1981
86°F avg
Coldest
1975
58°F avg

About This Date

June 18th in San Bernardino, CA typically brings hot summer weather, with average highs around 90°F and lows near 58°F — a 32°F daily swing. Over 48 years of records, the warmest June 18th was in 1981 (86°F average), while the coldest was 1975 (58°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 4% of June 18th dates historically.

Planning for June 18th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.

Warming Trend
0.8°F per decade on this date
YearHighLowAvgPrecipSnow
202599°66°82°
201796°66°81°
201694°63°78°
201594°64°79°
201482°58°70°
201385°55°70°
201294°58°76°
201185°58°71°
201085°55°70°
200989°56°72°
2008104°61°82°
200792°56°74°
200695°62°79°
200581°54°67°
200486°58°72°
200385°60°72°
200295°63°79°
200199°61°80°
200089°61°75°
199995°58°76°
199889°54°71°
199796°65°80°
199696°59°78°
199585°52°68°
199493°57°75°
199398°61°79°
199285°55°70°
199182°59°71°
199085°55°70°
1989101°63°82°
198890°54°72°
198786°55°71°
198688°58°73°
198595°60°78°
198493°60°77°
198390°57°73°
198266°58°62°0.08"
1981warmest107°64°86°
198092°57°74°
197978°56°67°
1978100°63°81°
197791°55°73°
197696°57°77°
1975coldest63°53°58°0.23"
197485°52°68°
1973100°54°77°
197289°59°74°
197196°56°76°
48 years of data from NORTON AFB

Browse Weather History

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

June 18th Weather in San Bernardino, CA - 55 Years of History