Weather on May 18

El Cajon, CA

55 Years of Data

Avg High
77°F
Avg Low
56°F
Warmest
1992
79°F avg
Coldest
2011
58°F avg

About This Date

May 18th in El Cajon, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 56°F. Over 55 years of records, the warmest May 18th was in 1992 (79°F average), while the coldest was 2011 (58°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 18th dates historically, with the wettest May 18th recording 0.51" of rain. The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.

The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.

Planning for May 18th in El Cajon, CA? Great weather for outdoor activities.

YearHighLowAvgPrecipSnow
202567°55°61°0.23"
202476°58°67°
202376°57°66°
202273°56°64°
202174°57°65°0.05"
202076°62°69°
201973°49°61°
201869°55°62°0.05"
201775°57°66°
201678°61°69°
201569°58°63°
201476°60°68°
201373°59°66°
201269°57°63°
2011coldest63°54°58°0.51"
201074°55°64°
200984°59°72°
200895°63°79°
200769°56°62°
200679°61°70°
200580°56°68°
200475°56°65°
200382°51°67°
200272°59°65°
200178°59°69°
200081°52°66°
199978°54°66°
199882°49°65°
199778°63°70°
199686°57°72°
199575°51°63°
199469°53°61°
199378°59°69°
1992warmest80°78°79°
199171°56°63°
199073°57°65°
198976°58°67°
198877°57°67°
198772°60°66°
198693°55°74°
198575°
198482°52°67°
198394°49°71°
198272°60°66°
198183°52°67°
198079°58°68°
197975°53°64°
197892°51°71°
197774°52°63°
197683°56°69°
197572°58°65°
197467°51°59°
197377°58°67°
197267°57°62°
197187°47°67°
55 years of data from GILLESPIE FLD

Browse Weather History

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