Regional Climate

 

City	Monthly Temp. (Farenheit/Celsius)								Annual Precip.		Annual Snowfall
	January		April		July		October		in	cm	in	cm
Billings MT	21	-6	45	7	72	22	49	9	15.09	38.29	22.5	57.2
Boise ID	30	-1	49	9	75	24	52	11	12.00	30.00	21.3	54.1
Casper WY	22	-6	42	6	71	22	47	8	11.43	29.01	31.7	80.5
Cheyenne WY	26	-3	42	6	69	21	48	9	13.31	33.78	21.3	54.1
Denver CO	30	-1	47	8	73	23	52	11	15.31	38.85	23.5	59.8
Helena MT	18	-8	42	6	68	20	45	7	11.37	28.85	18.9	47.9
Minneapolis MN	11	-12	46	8	73	23	50	10	26.36	66.90	19.2	48.9
Portland OR	39	4	51	11	68	20	55	13	36.30	92.20	6.6	16.8
Rapid City SD	34	1	55	13	83	28	61	16	26.49	67.31	36.0	91.4
Salt Lake City UT	29	-2	49	9	78	26	53	12	15.31	38.85	23.3	59.1
Sioux Falls SD	12	-11	46	8	74	23	49	9	24.12	61.21	15.7	39.9
Spokane WA	26	-3	46	8	70	21	47	8	16.71	41.04	20.3	51.5