Ottawa Weather in October
Average highs run from 75°F on October 1 to 62°F on October 31, and lows from 50°F to 38°F. Normal precipitation for the month is 3.08 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
- 69°F
- Average low
- 44°F
- Precipitation
- 3.08 in
- Snowfall
- 0.1 in
- Record high
- 98°FOct 7, 1939
- Record low
- 16°FOct 30, 1917
- Chance of a freeze
- 87%
- Daylight
- 11 h 47 min to 10 h 35 min
- Cloud cover
- 49%
- Humidity
- 70%
- Dew point
- 45°F
- Wind
- 11.0 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 | 75°F | 50°F | 95°F 1953 | 29°F 1984 | 27% | 0% |
| Oct 2 | 75°F | 50°F | 96°F 1963 | 32°F 1985 | 28% | 0% |
| Oct 3 | 74°F | 49°F | 93°F 1954 | 31°F 1987 | 28% | 0% |
| Oct 4 | 74°F | 49°F | 94°F 1963 | 32°F 1901 | 28% | 0% |
| Oct 5 | 73°F | 48°F | 97°F 1963 | 33°F 1979 | 28% | 0% |
| Oct 6 | 73°F | 48°F | 96°F 1963 | 26°F 1952 | 28% | 0% |
| Oct 7 | 73°F | 47°F | 98°F 1939 | 24°F 1952 | 28% | 0% |
| Oct 8 | 72°F | 47°F | 94°F 1980 | 25°F 1952 | 28% | 0% |
| Oct 9 | 72°F | 47°F | 94°F 1963 | 24°F 2000 | 28% | 0% |
| Oct 10 | 71°F | 46°F | 96°F 1963 | 21°F 1906 | 28% | 0% |
| Oct 11 | 71°F | 46°F | 90°F 1975 | 25°F 1906 | 28% | 0% |
| Oct 12 | 71°F | 45°F | 92°F 1899 | 22°F 1908 | 28% | 0% |
| Oct 13 | 70°F | 45°F | 94°F 1899 | 22°F 1907 | 28% | 0% |
| Oct 14 | 70°F | 45°F | 93°F 1899 | 26°F 1901 | 27% | 0% |
| Oct 15 | 69°F | 44°F | 90°F 1938 | 28°F 1943 | 27% | 0% |
| Oct 16 | 69°F | 44°F | 88°F 1938 | 25°F 1943 | 27% | 0% |
| Oct 17 | 68°F | 43°F | 89°F 1991 | 24°F 1976 | 27% | 1% |
| Oct 18 | 68°F | 43°F | 88°F 1953 | 25°F 1948 | 27% | 1% |
| Oct 19 | 68°F | 43°F | 87°F 1963 | 20°F 2022 | 27% | 1% |
| Oct 20 | 67°F | 42°F | 91°F 2003 | 20°F 2022 | 27% | 1% |
| Oct 21 | 67°F | 42°F | 90°F 1940 | 23°F 1905 | 27% | 1% |
| Oct 22 | 66°F | 41°F | 89°F 1899 | 22°F 1952 | 27% | 1% |
| Oct 23 | 66°F | 41°F | 91°F 1939 | 23°F 1937 | 27% | 1% |
| Oct 24 | 65°F | 41°F | 88°F 1939 | 22°F 1917 | 27% | 1% |
| Oct 25 | 65°F | 40°F | 90°F 1939 | 25°F 1972 | 27% | 1% |
| Oct 26 | 64°F | 40°F | 89°F 1952 | 22°F 1942 | 27% | 1% |
| Oct 27 | 64°F | 39°F | 87°F 1927 | 24°F 1914 | 27% | 1% |
| Oct 28 | 63°F | 39°F | 86°F 1927 | 17°F 1925 | 26% | 1% |
| Oct 29 | 63°F | 39°F | 91°F 1937 | 19°F 1952 | 26% | 1% |
| Oct 30 | 62°F | 38°F | 90°F 1950 | 16°F 1917 | 26% | 1% |
| Oct 31 | 62°F | 38°F | 87°F 1950 | 17°F 1993 | 26% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- October 1
- sunrise 7:17 AM, sunset 7:04 PM
- October 31
- sunrise 7:47 AM, sunset 6:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00146128 (Ottawa), public domain. Records: NOAA GHCN-Daily, station USC00146128, 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.