Is this weather normal in Gilliam County?

Oregon · county records since 1895, through September 2026.

Weather › Oregon › Gilliam County

10 of the last 12 months ran warmer than usual in Gilliam County. Gilliam County has warmed 3rd-most of Oregon's 36 counties since 1970, about 0.5° per decade.

This week

Usual for Oct 28 to Nov 3: highs near 56°, lows near 35°

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

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usual high for the datewarmercooler

The last 12 months

Oct: -1.2°OctNov: +3.8°NovDec: +8.0°DecJan 2026: +1.6°JanFeb: +2.5°FebMar: +4.0°MarApr: +1.6°AprMay: +3.0°MayJun: +1.5°JunJul: +0.7°JulAug: +0.7°AugSep: -2.6°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: -0.0 inOctNov: -0.2 inNovDec: +1.3 inDecJan 2026: -0.8 inJanFeb: +0.6 inFebMar: -0.6 inMarApr: +0.4 inAprMay: -0.4 inMayJun: -0.6 inJunJul: -0.1 inJulAug: -0.2 inAugSep: +0.8 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 Gilliam County

MonthUsual high / lowUsual rainWarmestColdest
January41° / 28°1.4 in41.3° 195312.1° 1930
February46° / 29°1.0 in43.6° 201520.5° 1936
March53° / 32°1.0 in48.6° 201534.8° 1917
April60° / 36°1.1 in55.2° 193441.8° 1955
May69° / 43°1.2 in60.8° 195849.3° 1933
June76° / 49°0.8 in70.7° 201555.9° 1953
July87° / 55°0.3 in76.0° 190661.8° 1993
August86° / 54°0.3 in74.6° 196759.8° 1899
September77° / 48°0.4 in67.4° 202553.6° 1895
October63° / 38°1.0 in57.0° 198844.1° 1905
November49° / 32°1.3 in46.2° 201626.6° 1985
December40° / 27°1.6 in41.5° 202521.0° 1985

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

Towns in Gilliam County

Nearby counties