September weather in Theresa, NY
The average temperature in Theresa in September is °F (°F–°F). Average precipitation: 4.43 inches.
September is a fall month in Theresa, and is cooler than the annual average of 0°F. Daylight averages about 12h 17m.
Avg High
°F
Avg Low
°F
Precipitation
4.43 in
Daylight
12h 17m
September records in Theresa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 86.0°F (2021) | 48.9°F (2023) | 1.45 in (1954) |
| September 2 | 80.1°F (2024) | 50.0°F (1941) | 1.67 in (1947) |
| September 3 | 80.1°F (2025) | 44.1°F (2024) | 2.63 in (1959) |
| September 4 | 84.0°F (2022) | 51.1°F (2021) | 0.97 in (1970) |
| September 5 | 82.9°F (2025) | 46.0°F (2019) | 0.77 in (1966) |
| September 6 | 77.0°F (2024) | 42.1°F (2024) | 1.97 in (1973) |
| September 7 | 82.0°F (2024) | 51.1°F (2023) | 1.05 in (1951) |
| September 8 | 80.1°F (2020) | 45.0°F (2025) | 0.40 in (1944) |
| September 9 | 79.0°F (2020) | 43.0°F (2025) | 0.50 in (1942) |
| September 10 | 80.1°F (1941) | 42.1°F (2019) | 1.11 in (1962) |
| September 11 | 84.0°F (2022) | 43.0°F (2024) | 2.56 in (1968) |
| September 12 | 82.9°F (2022) | 39.9°F (1941) | 1.05 in (1978) |
| September 13 | 79.0°F (2024) | 43.0°F (2019) | 0.84 in (1953) |
| September 14 | 82.9°F (2024) | 48.0°F (2023) | 3.65 in (1979) |
| September 15 | 84.0°F (2024) | 39.9°F (2020) | 1.76 in (2022) |
| September 16 | 84.9°F (2024) | 44.1°F (2019) | 0.98 in (1958) |
| September 17 | 86.0°F (2024) | 42.1°F (2019) | 0.70 in (1943) |
| September 18 | 88.0°F (2021) | 39.9°F (2020) | 2.00 in (1973) |
| September 19 | 82.9°F (2024) | 32.0°F (2020) | 1.28 in (1952) |
| September 20 | 82.9°F (2024) | 33.1°F (2020) | 1.65 in (2022) |
| September 21 | 82.9°F (2024) | 37.9°F (2020) | 0.97 in (1971) |
| September 22 | 82.9°F (2024) | 39.0°F (2023) | 1.63 in (1967) |
| September 23 | 82.9°F (2024) | 37.0°F (2020) | 0.88 in (1947) |
| September 24 | 77.0°F (2019) | 37.0°F (2022) | 0.56 in (1949) |
| September 25 | 75.9°F (2020) | 46.0°F (2019) | 0.72 in (1946) |
| September 26 | 77.0°F (2020) | 48.9°F (2023) | 0.50 in (2022) |
| September 27 | 82.0°F (2020) | 39.0°F (2023) | 1.26 in (1976) |
| September 28 | 82.9°F (2020) | 39.0°F (2023) | 0.82 in (1955) |
| September 29 | 84.0°F (2020) | 39.9°F (1941) | 1.00 in (1949) |
| September 30 | 79.0°F (2025) | 35.1°F (1941) | 1.54 in (1972) |