Is this weather normal in Lassen County?

California · county records since 1895, through September 2026.

Weather › California › Lassen County

Lassen County is in severe drought: NOAA's Palmer reading for September was -3.1. 10 of the last 12 months ran warmer than usual there.

This week

Usual for Oct 28 to Nov 3: highs near 56°, lows near 30°

That is the 1991 to 2020 average for these dates in Lassen County. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

Oct: -1.1°OctNov: +6.1°NovDec: +8.6°DecJan 2026: +4.9°JanFeb: +3.6°FebMar: +10.2°MarApr: +1.4°AprMay: +3.6°MayJun: +3.7°JunJul: +1.6°JulAug: +3.1°AugSep: -2.4°Sepwarmercooler

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1895.

Every year since 1895

18952025

Rain and drought

Oct: +0.9 inOctNov: +0.1 inNovDec: +1.7 inDecJan 2026: -1.4 inJanFeb: +1.3 inFebMar: -2.2 inMarApr: +0.4 inAprMay: -0.6 inMayJun: -0.7 inJunJul: -0.2 inJulAug: -0.2 inAugSep: +0.3 inSepwetterdrier

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Lassen County

MonthUsual high / lowUsual rainWarmestColdest
January42° / 22°3.0 in39.6° 200313.1° 1949
February45° / 24°2.5 in41.5° 196317.9° 1903
March50° / 27°2.5 in48.8° 202628.9° 1897
April56° / 31°1.9 in49.9° 193433.3° 1967
May65° / 38°1.7 in58.6° 199243.1° 1899
June75° / 44°0.9 in66.6° 202152.7° 1943
July85° / 50°0.3 in73.0° 202459.2° 1903
August84° / 49°0.2 in70.1° 201756.4° 1899
September77° / 43°0.4 in64.1° 202050.0° 1900
October63° / 34°1.2 in54.4° 193340.9° 1899
November49° / 27°1.9 in44.0° 202528.3° 1994
December41° / 21°3.3 in39.5° 202521.9° 1914

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Lassen County

Crime Radar: Susanville

Nearby counties