Rapid City, South Dakota
Climate

Rapid City, South Dakota

Section Title: Climate
Table Section Text: None

Climate data for Rapid City Regional Airport, South Dakota (1981−2010 normals, extremes 1942−present)

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

Record high °F (°C)	76 (24)	75 (24)	83 (28)	93 (34)	98 (37)	109 (43)	111 (44)	107 (42)	104 (40)	96 (36)	83 (28)	75 (24)	111 (44)

Mean maximum °F (°C)	62.3 (16.8)	64.4 (18.0)	74.2 (23.4)	82.3 (27.9)	88.1 (31.2)	94.7 (34.8)	101.9 (38.8)	100.4 (38.0)	95.5 (35.3)	85.6 (29.8)	72.2 (22.3)	61.2 (16.2)	103.5 (39.7)

Average high °F (°C)	37.1 (2.8)	39.6 (4.2)	47.9 (8.8)	58.3 (14.6)	67.8 (19.9)	77.8 (25.4)	87.1 (30.6)	86.4 (30.2)	75.6 (24.2)	61.4 (16.3)	47.0 (8.3)	36.9 (2.7)	60.4 (15.8)

Average low °F (°C)	12.9 (−10.6)	15.1 (−9.4)	22.9 (−5.1)	31.8 (−0.1)	42.1 (5.6)	51.2 (10.7)	58.1 (14.5)	56.6 (13.7)	46.0 (7.8)	34.1 (1.2)	22.1 (−5.5)	13.0 (−10.6)	33.9 (1.1)

Mean minimum °F (°C)	−8.4 (−22.4)	−7.1 (−21.7)	3.4 (−15.9)	16.5 (−8.6)	27.7 (−2.4)	39.5 (4.2)	47.9 (8.8)	46.1 (7.8)	30.4 (−0.9)	16.7 (−8.5)	2.7 (−16.3)	−9.7 (−23.2)	−18.5 (−28.1)

Record low °F (°C)	−27 (−33)	−31 (−35)	−21 (−29)	1 (−17)	18 (−8)	31 (−1)	39 (4)	38 (3)	18 (−8)	−2 (−19)	−19 (−28)	−30 (−34)	−31 (−35)

Average precipitation inches (mm)	0.30 (7.6)	0.44 (11)	0.93 (24)	1.80 (46)	3.22 (82)	2.53 (64)	1.85 (47)	1.56 (40)	1.29 (33)	1.42 (36)	0.53 (13)	0.42 (11)	16.29 (414)

Average snowfall inches (cm)	4.4 (11)	5.8 (15)	8.7 (22)	7.9 (20)	1.1 (2.8)	0 (0)	0 (0)	0 (0)	0.2 (0.51)	1.6 (4.1)	6.0 (15)	5.4 (14)	41.1 (104)

Average precipitation days (≥ 0.01 in)	5.4	5.7	7.6	9.5	11.7	12.3	9.5	7.7	7.0	7.2	5.3	5.4	94.3

Average snowy days (≥ 0.1 in)	5.4	5.8	5.3	4.4	0.4	0	0	0	0.4	1.5	4.1	5.8	33.1

Average relative humidity (%)	63.5	65.1	63.8	58.6	60.8	61.9	56.2	52.6	53.5	54.2	62.2	64.8	59.8

Mean monthly sunshine hours	163.5	174.0	233.9	246.9	274.3	310.5	335.5	323.8	261.9	226.0	156.6	149.9	2,856.8

Percent possible sunshine	57	59	63	61	60	67	72	75	70	66	54	54	64

Source: NOAA (relative humidity and sun 1961−1990)

Sentence(s)

Rapid City records an average of 1.56 inches of rain in August.

final_sentence: Rapid City records an average of 1.56 inches of rain in August.