Idaho Weather Records

Weather averages and records for the U.S. state of Idaho based on data made available by the NOAA.

State:

Month:

Idaho Statewide Averages

Average temperatures and precipitation over the entire territory of the state, from 1991–2020.

Month	High (°F)	Low (°F)	Precipitation (in)
January	33.2	17.1	2.8
February	37.4	18.7	2.2
March	45.9	24.6	2.4
April	53.2	29.8	2.2
May	62.9	37.4	2.3
June	71.2	43.7	1.8
July	82.3	50.5	0.7
August	81.3	49.2	0.7
September	71.2	41.6	1.1
October	56.2	32.3	1.9
November	41.5	23.5	2.5
December	32.4	16.9	3.0
Entire Year	55.7	32.1	23.7

Idaho Cities

Yearly weather averages for various places in Idaho, from 1991–2020.

City	Average (°F)		Record (°F)		Yearly (inches)
City	High	Low	High	Low	Precipitation	Snow
Boise	64.4	41.7	111	-30	11.5	17.6
Bonners Ferry	58.1	36.7	108	-33	20.6	55.3
Burley	61.8	36.6	107	-35	10.1	n/a
Coeur d'Alene	58.4	39.3	109	-30	25.3	n/a
Emmett	64.2	38.8	111	-27	13.3	6.9
Hamer	58.9	28.1	105	-48	8.8	23.5
Idaho Falls	58.0	31.3	102	-38	9.8	n/a
Jerome	63.8	36.7	110	-25	10.4	n/a
Kellogg	58.6	36.3	111	-36	33.9	51.2
Ketchum	54.7	26.1	98	-46	17.2	104.6
Lewiston	64.0	43.1	117	-22	12.8	12.3
McCall	55.3	28.2	104	-35	24.4	126.0
Moscow	59.8	36.0	109	-42	27.7	50.3
Pierce	56.8	30.7	108	-44	41.9	101.8
Pocatello	60.6	33.6	104	-33	11.8	38.1
Preston	60.5	33.6	110	-31	16.7	49.8
Rexburg	56.8	32.0	102	-36	12.8	n/a
Salmon	58.5	32.4	105	-34	9.3	23.2
Sandpoint	57.3	35.6	106	-37	33.0	52.2
St. Maries	58.6	37.0	110	-29	31.9	55.0
Twin Falls	62.0	37.8	107	-24	10.3	n/a