Is this weather normal in Boundary County?

Idaho · county records since 1895, through September 2026.

Weather › Idaho › Boundary County

10 of the last 12 months ran warmer than usual in Boundary County. Boundary County has warmed about 0.6° per decade since 1970.

This week

Usual for Oct 28 to Nov 3: highs near 42°, lows near 29°

That is the 1991 to 2020 average for these dates in Boundary 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: +3.4°NovDec: +5.1°DecJan 2026: +1.4°JanFeb: +2.6°FebMar: +1.1°MarApr: +1.0°AprMay: +3.2°MayJun: +0.1°JunJul: +3.3°JulAug: +1.2°AugSep: -1.7°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: +0.5 inOctNov: +1.0 inNovDec: +3.6 inDecJan 2026: -2.1 inJanFeb: -0.8 inFebMar: -1.1 inMarApr: -0.4 inAprMay: -0.6 inMayJun: -0.7 inJunJul: -1.3 inJulAug: -0.5 inAugSep: +1.4 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 Boundary County

MonthUsual high / lowUsual rainWarmestColdest
January30° / 20°4.7 in31.6° 19531.6° 1937
February34° / 20°3.4 in32.9° 20168.4° 1936
March41° / 25°4.2 in38.1° 199223.0° 1955
April49° / 30°2.9 in46.8° 201634.5° 1955
May59° / 38°3.1 in58.6° 189742.9° 1955
June64° / 44°3.0 in61.6° 201548.8° 1901
July75° / 50°1.4 in69.9° 202153.5° 1993
August74° / 49°1.1 in68.2° 189754.5° 1964
September64° / 42°1.8 in60.2° 202545.4° 1965
October48° / 33°3.4 in47.2° 202235.6° 2009
November35° / 25°5.1 in37.0° 189917.2° 1985
December29° / 19°4.9 in32.0° 190013.2° 1983

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

Towns in Boundary County

Crime Radar: Bonners Ferry

Nearby counties