Eureka Weather in October
Average highs run from 67°F on October 1 to 48°F on October 31, and lows from 40°F to 31°F. Normal precipitation for the month is 1.24 in over about 9 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
- 57°F
- Average low
- 35°F
- Precipitation
- 1.24 in
- Snowfall
- 0.6 in
- Record high
- 86°FOct 2, 1992
- Record low
- -4°FOct 31, 1935
- Chance of a freeze
- 100%
- Daylight
- 11 h 39 min to 9 h 55 min
- Cloud cover
- 67%
- Humidity
- 77%
- Dew point
- 29°F
- Wind
- 4.3 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 | 67°F | 40°F | 82°F 1992 | 19°F 1950 | 23% | 0% |
| Oct 2 | 66°F | 40°F | 86°F 1992 | 19°F 2019 | 24% | 0% |
| Oct 3 | 66°F | 39°F | 77°F 1917 | 17°F 1950 | 24% | 1% |
| Oct 4 | 65°F | 39°F | 81°F 1970 | 19°F 1999 | 24% | 1% |
| Oct 5 | 65°F | 39°F | 80°F 2021 | 17°F 2001 | 24% | 1% |
| Oct 6 | 64°F | 38°F | 81°F 2020 | 15°F 2000 | 24% | 1% |
| Oct 7 | 63°F | 38°F | 82°F 1979 | 16°F 2000 | 25% | 1% |
| Oct 8 | 63°F | 38°F | 80°F 1980 | 14°F 2009 | 25% | 1% |
| Oct 9 | 62°F | 37°F | 75°F 2023 | 10°F 2009 | 25% | 1% |
| Oct 10 | 61°F | 37°F | 79°F 2015 | 5°F 2009 | 25% | 1% |
| Oct 11 | 61°F | 37°F | 76°F 1991 | 6°F 2009 | 26% | 1% |
| Oct 12 | 60°F | 36°F | 73°F 1979 | 2°F 2009 | 26% | 1% |
| Oct 13 | 59°F | 36°F | 75°F 1976 | 13°F 2021 | 26% | 1% |
| Oct 14 | 59°F | 36°F | 73°F 1929 | 17°F 2002 | 27% | 1% |
| Oct 15 | 58°F | 35°F | 79°F 1991 | 17°F 1970 | 27% | 2% |
| Oct 16 | 57°F | 35°F | 73°F 1974 | 15°F 1999 | 27% | 2% |
| Oct 17 | 57°F | 35°F | 72°F 1974 | 15°F 1905 | 27% | 2% |
| Oct 18 | 56°F | 34°F | 73°F 1940 | 8°F 1905 | 28% | 2% |
| Oct 19 | 55°F | 34°F | 71°F 1903 | 15°F 1976 | 28% | 2% |
| Oct 20 | 55°F | 34°F | 77°F 2023 | 16°F 1982 | 28% | 2% |
| Oct 21 | 54°F | 33°F | 75°F 2003 | 12°F 1981 | 28% | 2% |
| Oct 22 | 53°F | 33°F | 70°F 2003 | 12°F 1981 | 29% | 3% |
| Oct 23 | 53°F | 33°F | 71°F 1944 | 12°F 1919 | 29% | 3% |
| Oct 24 | 52°F | 33°F | 72°F 2007 | 8°F 2002 | 29% | 3% |
| Oct 25 | 52°F | 32°F | 70°F 2019 | 0°F 2020 | 29% | 3% |
| Oct 26 | 51°F | 32°F | 64°F 1901 | 0°F 2020 | 30% | 3% |
| Oct 27 | 51°F | 32°F | 69°F 1983 | 12°F 2023 | 30% | 3% |
| Oct 28 | 50°F | 32°F | 70°F 1937 | 5°F 2019 | 30% | 4% |
| Oct 29 | 49°F | 31°F | 66°F 1921 | -3°F 2019 | 30% | 4% |
| Oct 30 | 49°F | 31°F | 63°F 1965 | -1°F 1991 | 31% | 4% |
| Oct 31 | 48°F | 31°F | 63°F 1967 | -4°F 1935 | 31% | 4% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- October 1
- sunrise 7:40 AM, sunset 7:19 PM
- October 31
- sunrise 8:26 AM, sunset 6:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00242827 (Eureka RS), public domain. Records: NOAA GHCN-Daily, station USC00244558, 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.