Spearfish Weather in October
Average highs run from 66°F on October 1 to 51°F on October 31, and lows from 41°F to 30°F. Normal precipitation for the month is 2.04 in over about 7 wet days.
October day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 58°F
- Average low
- 35°F
- Precipitation
- 2.04 in
- Snowfall
- 5.5 in
- Record high
- 95°FOct 15, 1908
- Record low
- -7°FOct 26, 2020
- Chance of a freeze
- 100%
- Daylight
- 11 h 43 min to 10 h 14 min
- Cloud cover
- 59%
- Humidity
- 61%
- Dew point
- 31°F
- Wind
- 8.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Oct 1 | 66°F | 41°F | 90°F 1953 | 25°F 1933 | 22% | 3% |
| Oct 2 | 65°F | 41°F | 91°F 2011 | 22°F 1985 | 22% | 3% |
| Oct 3 | 65°F | 41°F | 90°F 2011 | 24°F 1950 | 22% | 3% |
| Oct 4 | 64°F | 40°F | 91°F 1963 | 22°F 1950 | 22% | 3% |
| Oct 5 | 64°F | 40°F | 90°F 1949 | 18°F 1898 | 22% | 3% |
| Oct 6 | 63°F | 39°F | 85°F 1920 | 14°F 1952 | 22% | 3% |
| Oct 7 | 63°F | 39°F | 91°F 1975 | 15°F 1946 | 22% | 3% |
| Oct 8 | 62°F | 38°F | 89°F 1934 | 18°F 1946 | 22% | 4% |
| Oct 9 | 61°F | 38°F | 92°F 1928 | 18°F 2009 | 22% | 4% |
| Oct 10 | 61°F | 38°F | 87°F 1953 | 14°F 1919 | 22% | 4% |
| Oct 11 | 60°F | 37°F | 86°F 2015 | 16°F 2019 | 22% | 4% |
| Oct 12 | 60°F | 37°F | 84°F 1934 | 13°F 1909 | 22% | 4% |
| Oct 13 | 59°F | 36°F | 85°F 1958 | 14°F 1985 | 22% | 4% |
| Oct 14 | 59°F | 36°F | 85°F 1958 | 10°F 1969 | 22% | 4% |
| Oct 15 | 58°F | 36°F | 95°F 1908 | 15°F 1992 | 22% | 4% |
| Oct 16 | 58°F | 35°F | 84°F 1961 | 15°F 1992 | 22% | 4% |
| Oct 17 | 57°F | 35°F | 85°F 1927 | 16°F 1930 | 22% | 5% |
| Oct 18 | 57°F | 34°F | 83°F 1958 | 11°F 1905 | 21% | 5% |
| Oct 19 | 56°F | 34°F | 83°F 1958 | 7°F 1960 | 21% | 5% |
| Oct 20 | 56°F | 34°F | 87°F 1935 | 17°F 1925 | 21% | 5% |
| Oct 21 | 55°F | 33°F | 83°F 1974 | 11°F 1906 | 21% | 5% |
| Oct 22 | 55°F | 33°F | 94°F 1897 | 15°F 1917 | 21% | 5% |
| Oct 23 | 55°F | 33°F | 81°F 1963 | 10°F 1919 | 21% | 5% |
| Oct 24 | 54°F | 32°F | 79°F 1973 | 4°F 2020 | 21% | 5% |
| Oct 25 | 54°F | 32°F | 84°F 1927 | 5°F 2020 | 21% | 5% |
| Oct 26 | 53°F | 32°F | 82°F 1922 | -7°F 2020 | 21% | 6% |
| Oct 27 | 53°F | 32°F | 89°F 1938 | -4°F 1925 | 21% | 6% |
| Oct 28 | 53°F | 31°F | 82°F 1937 | 9°F 1991 | 21% | 6% |
| Oct 29 | 52°F | 31°F | 81°F 1968 | -2°F 1991 | 21% | 6% |
| Oct 30 | 52°F | 31°F | 81°F 1950 | 0°F 2019 | 20% | 6% |
| Oct 31 | 51°F | 30°F | 80°F 1933 | 6°F 1935 | 20% | 6% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- October 1
- sunrise 6:53 AM, sunset 6:36 PM
- October 31
- sunrise 7:32 AM, sunset 5:46 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00397882 (Spearfish), public domain. Records: NOAA GHCN-Daily, station USC00397882, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.