Mercer County Weather in October
Average highs run from 69°F on October 1 to 57°F on October 31, and lows from 43°F to 34°F.
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
- 63°F
- Average low
- 38°F
- Snowfall
- 0.1 in
- Record high
- 91°FOct 2, 1927
- Record low
- 17°FOct 29, 1965
- Chance of a freeze
- 99%
- Daylight
- 11 h 45 min to 10 h 26 min
- Cloud cover
- 67%
- Humidity
- 77%
- Dew point
- 44°F
- Wind
- 4.9 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 | 69°F | 43°F | 87°F 1952 | 26°F 1916 | 0% | |
| Oct 2 | 69°F | 43°F | 91°F 1927 | 30°F 1916 | 0% | |
| Oct 3 | 69°F | 42°F | 90°F 1927 | 24°F 1908 | 0% | |
| Oct 4 | 68°F | 42°F | 90°F 2019 | 25°F 1974 | 0% | |
| Oct 5 | 68°F | 42°F | 90°F 1951 | 29°F 1963 | 0% | |
| Oct 6 | 67°F | 41°F | 91°F 2007 | 26°F 1958 | 0% | |
| Oct 7 | 67°F | 41°F | 90°F 1941 | 24°F 1964 | 0% | |
| Oct 8 | 67°F | 41°F | 89°F 1916 | 24°F 1923 | 0% | |
| Oct 9 | 66°F | 40°F | 91°F 2007 | 27°F 1907 | 0% | |
| Oct 10 | 66°F | 40°F | 87°F 1939 | 27°F 1924 | 0% | |
| Oct 11 | 65°F | 40°F | 87°F 2010 | 23°F 1964 | 0% | |
| Oct 12 | 65°F | 39°F | 85°F 1938 | 21°F 1906 | 1% | |
| Oct 13 | 65°F | 39°F | 88°F 1928 | 24°F 1957 | 1% | |
| Oct 14 | 64°F | 39°F | 86°F 1928 | 24°F 1934 | 1% | |
| Oct 15 | 64°F | 38°F | 85°F 1947 | 25°F 1939 | 1% | |
| Oct 16 | 63°F | 38°F | 86°F 1935 | 25°F 1912 | 1% | |
| Oct 17 | 63°F | 38°F | 83°F 1938 | 27°F 1937 | 1% | |
| Oct 18 | 63°F | 38°F | 84°F 1908 | 22°F 1939 | 1% | |
| Oct 19 | 62°F | 37°F | 84°F 1953 | 20°F 1907 | 1% | |
| Oct 20 | 62°F | 37°F | 82°F 1920 | 21°F 1972 | 1% | |
| Oct 21 | 61°F | 37°F | 84°F 1920 | 18°F 1952 | 1% | |
| Oct 22 | 61°F | 36°F | 85°F 2007 | 20°F 1923 | 1% | |
| Oct 23 | 61°F | 36°F | 81°F 2007 | 20°F 1923 | 2% | |
| Oct 24 | 60°F | 36°F | 82°F 1963 | 20°F 1907 | 2% | |
| Oct 25 | 60°F | 36°F | 82°F 2012 | 24°F 1966 | 2% | |
| Oct 26 | 59°F | 35°F | 85°F 2012 | 20°F 1907 | 2% | |
| Oct 27 | 59°F | 35°F | 81°F 1963 | 21°F 1949 | 2% | |
| Oct 28 | 58°F | 35°F | 84°F 1927 | 19°F 1936 | 3% | |
| Oct 29 | 58°F | 34°F | 81°F 2014 | 17°F 1965 | 3% | |
| Oct 30 | 58°F | 34°F | 80°F 1999 | 19°F 1969 | 3% | |
| Oct 31 | 57°F | 34°F | 80°F 1950 | 17°F 1988 | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- October 1
- sunrise 7:18 AM, sunset 7:03 PM
- October 31
- sunrise 7:51 AM, sunset 6:17 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00365651 (Mercer), public domain. Records: NOAA GHCN-Daily, station USC00366233, 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.