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Boulder October Weather

Averages and records for weather in Boulder, Colorado in the month of October.

Typical Boulder October Weather 1991–2020
Average daily high	65.8 °F
Average daily low	37.8 °F
Average monthly precipitation	1.6 inches
Average monthly snow	7.0 inches
Daily chance of precipitation	23.0%
Daily chance of snow	6.9%

Boulder October Weather Records 1893–2024
Highest temperature	90 °F	October 1, 1953
Lowest temperature	-2 °F	October 29, 1917
Highest daily low	64 °F	October 9, 1965
Lowest daily high	18 °F	October 26, 2020
Hottest average high temperature	77.4 °F	1950
Coldest average high temperature	51.8 °F	1925
Most daily precipitation	2.5 inches	October 15, 1916
Most monthly precipitation	6.0 inches	1942
Most daily snow	22.1 inches	October 25, 1997
Most monthly snow	49.3 inches	1969

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
October 1	72.1	43.0	90	23
October 2	71.7	42.6	89	27
October 3	71.4	42.2	88	30
October 4	71.0	41.9	88	30
October 5	70.7	41.5	90	27
October 6	70.4	41.3	86	28
October 7	70.2	41.0	88	23
October 8	69.8	40.7	86	22
October 9	69.5	40.5	86	24
October 10	69.1	40.1	88	15
October 11	68.6	39.8	87	15
October 12	68.0	39.4	89	20
October 13	67.6	39.0	86	10
October 14	67.0	38.6	85	13
October 15	66.5	38.2	85	13
October 16	65.9	37.7	87	20
October 17	65.3	37.3	85	15
October 18	64.8	36.9	86	19
October 19	64.3	36.5	87	17
October 20	63.9	36.1	87	19
October 21	63.6	35.8	84	17
October 22	63.2	35.5	85	19
October 23	62.7	35.2	86	21
October 24	62.5	35.0	83	19
October 25	62.3	34.8	85	10
October 26	61.9	34.6	81	5
October 27	61.5	34.2	82	4
October 28	61.0	33.9	80	11
October 29	60.5	33.5	83	-2
October 30	60.1	33.3	80	3
October 31	59.6	33.0	83	3

Weather Station Details

Years	Station	Coordinates
1893–2024	Boulder	location