NOAA GHCND · LIVE

Weather on May 27

San Bernardino, CA

55 Years of Data

Avg High
82°F
Avg Low
55°F
Warmest
1983
80°F avg
Coldest
1971
58°F avg

About This Date

May 27th in San Bernardino, CA typically brings warm spring weather, with average highs around 82°F and lows near 55°F — a 27°F daily swing. Over 49 years of records, the warmest May 27th was in 1983 (80°F average), while the coldest was 1971 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 6% of May 27th dates historically.

Planning for May 27th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.

Cooling Trend
0.4°F per decade on this date
YearHighLowAvgPrecipSnow
202672°56°64°
202584°58°71°
201774°52°63°
201680°51°66°
201576°54°65°
201492°61°76°
201383°52°67°
201282°46°64°
201184°52°68°
201070°55°62°
200987°55°71°
200874°45°59°
200787°53°70°
200672°56°64°
200586°54°70°
200479°51°65°
2003102°57°80°
200280°54°67°
200181°59°70°
2000101°59°80°
199989°57°73°
199875°52°63°
199796°62°79°
199678°53°66°
199577°53°65°
199482°52°67°
199378°54°66°
199280°59°70°
199169°55°62°
199077°51°64°
198986°54°70°
198877°55°66°
198763°53°58°
198689°57°73°
198577°55°66°
198499°62°80°
1983warmest100°60°80°
198268°57°63°0.01"
198179°61°70°0.11"
198069°52°60°
197982°61°71°
197889°50°70°
197777°47°62°
197687°55°71°
197585°55°70°
197492°59°75°
1973101°51°76°
197290°51°70°
1971coldest68°49°58°0.07"
49 years of data from NORTON AFB

San Bernardino, CA Temperature Range by Month

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

30°50°70°90°110°JFMAMJJASOND
Avg high Avg low

San Bernardino, CA Monthly Precipitation

Average rainfall and snowfall per month, in inches.

0"0.2"0.5"JFMAMJJASOND0.1"0"
Rain (in) Snow (in)

San Bernardino, 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 San Bernardino, CA

Most pleasant months in San Bernardino, CA: January, February, March, April, May, October, November, December.

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

What to expect on May 27th

This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.

May 27th outlook →

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