Cape Vincent Weather in September
Average highs run from 76°F on September 1 to 65°F on September 30, and lows from 53°F to 44°F. Normal precipitation for the month is 3.56 in over about 11 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 71°F
- Average low
- 49°F
- Precipitation
- 3.56 in
- Record high
- 96°FSep 4, 1953
- Record low
- 22°FSep 30, 1991
- Chance of a freeze
- 49%
- Daylight
- 13 h 12 min to 11 h 46 min
- Cloud cover
- 56%
- Humidity
- 76%
- Dew point
- 55°F
- Wind
- 7.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 76°F | 53°F | 89°F 1953 | 37°F 1967 | 33% |
| Sep 2 | 76°F | 53°F | 90°F 1952 | 31°F 1967 | 33% |
| Sep 3 | 76°F | 53°F | 93°F 1953 | 31°F 1976 | 34% |
| Sep 4 | 75°F | 52°F | 96°F 1953 | 31°F 1997 | 34% |
| Sep 5 | 75°F | 52°F | 93°F 1973 | 33°F 2000 | 34% |
| Sep 6 | 75°F | 52°F | 92°F 1971 | 32°F 2000 | 34% |
| Sep 7 | 75°F | 52°F | 95°F 2007 | 37°F 1967 | 35% |
| Sep 8 | 74°F | 51°F | 88°F 1964 | 32°F 1990 | 35% |
| Sep 9 | 74°F | 51°F | 91°F 1959 | 33°F 1979 | 35% |
| Sep 10 | 74°F | 51°F | 90°F 1959 | 34°F 1973 | 35% |
| Sep 11 | 73°F | 50°F | 89°F 1961 | 31°F 1967 | 36% |
| Sep 12 | 73°F | 50°F | 85°F 1951 | 33°F 1976 | 36% |
| Sep 13 | 73°F | 50°F | 89°F 1951 | 32°F 1964 | 36% |
| Sep 14 | 72°F | 49°F | 90°F 1961 | 32°F 1986 | 36% |
| Sep 15 | 72°F | 49°F | 83°F 1971 | 32°F 2020 | 37% |
| Sep 16 | 71°F | 49°F | 88°F 1991 | 30°F 1959 | 37% |
| Sep 17 | 71°F | 48°F | 85°F 1955 | 29°F 1961 | 37% |
| Sep 18 | 71°F | 48°F | 86°F 1955 | 26°F 1990 | 38% |
| Sep 19 | 70°F | 48°F | 84°F 2003 | 26°F 2020 | 38% |
| Sep 20 | 70°F | 47°F | 88°F 1983 | 27°F 1993 | 38% |
| Sep 21 | 69°F | 47°F | 88°F 1965 | 27°F 1962 | 39% |
| Sep 22 | 69°F | 47°F | 91°F 1965 | 28°F 1974 | 39% |
| Sep 23 | 68°F | 46°F | 86°F 1959 | 26°F 1974 | 40% |
| Sep 24 | 68°F | 46°F | 88°F 1970 | 26°F 1997 | 40% |
| Sep 25 | 67°F | 46°F | 89°F 2007 | 30°F 1950 | 41% |
| Sep 26 | 67°F | 46°F | 84°F 2017 | 27°F 1978 | 41% |
| Sep 27 | 67°F | 45°F | 85°F 2017 | 26°F 1989 | 42% |
| Sep 28 | 66°F | 45°F | 85°F 1959 | 27°F 1957 | 42% |
| Sep 29 | 66°F | 45°F | 88°F 1959 | 23°F 2000 | 43% |
| Sep 30 | 65°F | 44°F | 80°F 1953 | 22°F 1991 | 43% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 6:29 AM, sunset 7:41 PM
- September 30
- sunrise 7:02 AM, sunset 6:48 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094790 (Watertown Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00094790, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.