South Bristol Weather Forecast
- 29
- 38
Slight Chance Rain Showers
- 26
- 32
Increasing Clouds
- 17
- 37
Mostly Cloudy
- 23
- 26
Wintry Mix
- 31
- 34
Rain Showers
- 20
- 42
Rain/Snow Likely
- 15
- 24
Chance Snow Showers
Today 23 Dec Ontario
Cloudy. A chance of rain and snow Showers Early, then a chance of rain Showers late. Patchy fog late. Highs Ranging from the mid 30s on the Hilltops to the upper 30s across the lower Elevations. Southwest Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of precipitation 40 percent.
Tonight 23 Dec Ontario
Cloudy with some patchy fog early. Windy with Lows in the upper 20s. West Winds 10 to 20 Mph, becoming northwest and increasing to 20 to 30 Mph with Gusts up to 40 Mph.
South Bristol Temperature Statistics
December Temperature
Penn Yan, Penn Yan Airport (18.6 miles)
Lowest 4 December, 2025
3 °FAverage December
26.8 °FHighest 19 December, 2025
54 °F
Climate (2020–Present)
Penn Yan, Penn Yan Airport (18.6 miles)
Average Low 2020–2025
42 °FAverage 2020–2025
50.5 °FAverage High 2020–2025
59.2 °F