Weather on June 21

Pomona, CA

55 Years of Data

Avg High
85°F
Avg Low
57°F
Warmest
1973
85°F avg
Coldest
1975
60°F avg

About This Date

June 21st in Pomona, CA typically brings warm summer weather, with average highs around 85°F and lows near 57°F — a 28°F daily swing. Over 51 years of records, the warmest June 21st was in 1973 (85°F average), while the coldest was 1975 (60°F) — a 25°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.

The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.

Planning for June 21st in Pomona, CA? Stay hydrated and seek shade during peak afternoon hours.

Warming Trend
0.4°F per decade on this date
YearHighLowAvgPrecipSnow
202573°58°65°
202490°58°74°
202380°53°67°
202293°64°79°
202188°57°72°
202081°57°69°
201965°56°60°
201887°55°71°
201796°69°83°
201692°67°79°
201587°61°74°
201489°57°73°
201384°56°70°
201283°60°71°
201193°59°76°
201076°51°63°
200987°62°75°
2008108°53°80°
200793°58°75°
200691°57°74°
200595°57°76°
200478°59°69°
200369°56°62°
200283°61°72°
200196°64°80°
200087°56°71°
199977°53°65°
199883°56°69°
199381°57°69°
199281°50°65°
199174°55°64°
199086°59°73°
198994°54°74°
198884°52°68°
198778°56°67°
198685°49°67°
198579°54°66°
198485°54°69°
198380°59°70°
198269°60°65°
198192°58°75°
198086°50°68°
197983°54°68°
197892°52°72°
197778°55°67°
197688°52°70°
1975coldest74°47°60°
197489°54°71°
1973warmest105°65°85°
197289°60°75°
197194°57°75°
51 years of data from POMONA/FAIRPLEX

Browse Weather History

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