Weather on December 31

Rialto, CA

55 Years of Data

Avg High
62°F
Avg Low
43°F
Warmest
1997
66°F avg
Coldest
2014
39°F avg

About This Date

December 31st in Rialto, CA typically brings mild winter weather, with average highs around 62°F and lows near 43°F. Over 47 years of records, the warmest December 31st was in 1997 (66°F average), while the coldest was 2014 (39°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 11% of December 31st dates historically.

Planning for December 31st in Rialto, CA? Great weather for outdoor activities.

YearHighLowAvgPrecipSnow
202564°54°59°
201650°41°46°
201555°42°49°
2014coldest45°34°39°
201373°53°63°
201255°36°45°
201177°53°65°
201049°35°42°
200963°48°55°
200871°50°61°
200761°50°55°
200660°41°51°
200552°46°49°
200447°43°45°
200365°41°53°
200257°41°49°
200155°46°51°
200077°53°65°
199949°42°45°
199873°47°60°
1997warmest77°56°66°
199665°50°57°
199572°50°61°
199458°38°48°
199372°43°57°
199260°42°51°
199154°43°48°
199055°41°48°
198972°39°55°
198853°31°42°0.13"
198756°30°43°
198666°41°54°
198563°46°54°
198472°38°55°
198376°49°62°
198264°37°51°
198157°51°54°0.13"
198083°46°64°
197974°46°60°
197865°34°49°
197760°49°54°0.03"
197659°47°53°0.28"
197560°46°53°
197454°42°48°0.05"
197367°38°52°
197260°28°44°
197159°38°48°
47 years of data from FONTANA 5 N

Browse Weather History

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