Lewiston, Idaho
Climate

Lewiston, Idaho

Section Title: Climate
Table Section Text: None

Climate data for Lewiston, Idaho (1981−2010 normals)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year

Record high °F (°C)	66 (19)	72 (22)	80 (27)	99 (37)	104 (40)	111 (44)	117 (47)	115 (46)	108 (42)	94 (34)	77 (25)	67 (19)	117 (47)

Average high °F (°C)	41.6 (5.3)	46.5 (8.1)	54.9 (12.7)	62.3 (16.8)	70.9 (21.6)	78.5 (25.8)	89.3 (31.8)	88.8 (31.6)	78.2 (25.7)	62.6 (17.0)	48.2 (9.0)	39.5 (4.2)	63.4 (17.4)

Average low °F (°C)	29.6 (−1.3)	30.9 (−0.6)	35.6 (2.0)	40.3 (4.6)	47.0 (8.3)	53.4 (11.9)	59.6 (15.3)	59.2 (15.1)	51.0 (10.6)	41.1 (5.1)	34.1 (1.2)	28.0 (−2.2)	42.5 (5.8)

Record low °F (°C)	−22 (−30)	−18 (−28)	2 (−17)	20 (−7)	23 (−5)	34 (1)	41 (5)	41 (5)	27 (−3)	15 (−9)	−3 (−19)	−23 (−31)	−23 (−31)

Average precipitation inches (mm)	1.07 (27)	.78 (20)	1.15 (29)	1.31 (33)	1.61 (41)	1.24 (31)	.64 (16)	.69 (18)	.67 (17)	.96 (24)	1.17 (30)	.97 (25)	12.25 (311)

Average snowfall inches (cm)	2.1 (5.3)	1.9 (4.8)	.5 (1.3)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	1.4 (3.6)	3.3 (8.4)	9.3 (24)

Average precipitation days (≥ 0.01 in)	10.0	8.5	11.2	10.2	10.6	8.8	4.6	4.1	4.9	7.9	11.3	10.6	102.8

Average snowy days (≥ 0.1 in)	2.2	1.8	.6	0	0	0	0	0	0	0	1.1	3.6	9.3

Source: NOAA (extremes 1881−present), Weather.com

Sentence(s)

Precipitation averages 12.25 inches (311 mm) annually, an average snowfall of 9.3 inches.

final_sentence: Precipitation averages 12.25 inches (311 mm) annually, an average snowfall of 9.3 inches.