Wilder Cemetery · Photo: DanielPenfield · CC BY-SA 4.0South Bristol sits near the bottom of U.S. towns for July heat
The coldest hours of a January night bottom out at 15° on average. The seasons are far apart: from a winter night to a summer afternoon the average spans 63°. Its January nights bite harder than in 85% of U.S. towns. Picnics, hikes and garden evenings come into their own from May to September, with highs of 67–78°.
A year in South Bristol at a glance
Each month’s typical high and low, and what it brings.
What stands out about South Bristol’s climate
Compared with towns across the U.S., with South Bristol’s place in New York beside it.
What a year in South Bristol feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 147 frost-free days a year
In half of years the last 32° night comes by May 10 and the first by October 4. Frost and day counts come from Honeoye, NY, 9 miles away.
The 2023 USDA map puts South Bristol’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −8°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 55 inches of snow a winter
Snow, measured at Honeoye, NY, is heaviest from January through February, about 14 inches a month. Precipitation (rain plus melted snow) adds up to 38 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 164 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in South Bristol
93% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Honeoye, NY.
Living with South Bristol’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
147 frost-free days in zone 6a. The last frost comes by May 10 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 4.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 48 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in South Bristol from natural hazards, river flooding is the largest share (87%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →South Bristol and its neighbors
Richmond the hottest July afternoons (81°, 3° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like South Bristol’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| South Bristol, NY | 15° | 78° | 38" | 55" |
| Green Bay, WI | 13° | 78° | 32" | 56" |
| Alpena, MI | 14° | 78° | 31" | 59" |
| Milton, VT | 10° | 80° | 40" | 50" |
| Hanover, NH | 9° | 80° | 42" | 61" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in South Bristol averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.9°).
A bigger shift than in 53% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How South Bristol compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with South Bristol’s place among New York’s.
South Bristol weather by month
Highs, lows and precipitation from NOAA’s grid at South Bristol’s center; snow, wet days and snow on the ground from Honeoye, NY. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 30° | 15° | 2.3" | 13.4" | 17 | 21 | 12° – 32° |
| February | 33° | 16° | 1.9" | 13.8" | 13 | 19 | 9° – 33° |
| March | 41° | 23° | 2.5" | 11.9" | 14 | 13 | 25° – 44° |
| April | 54° | 33° | 3.0" | 1.7" | 14 | 1 | 38° – 50° |
| May | 67° | 45° | 3.5" | 0.0" | 13 | 0 | 49° – 61° |
| June | 75° | 54° | 4.0" | 0.0" | 13 | 0 | 61° – 69° |
| July | 78° | 59° | 4.1" | 0.0" | 12 | 0 | 64° – 72° |
| August | 77° | 58° | 3.8" | 0.0" | 11 | 0 | 64° – 72° |
| September | 70° | 51° | 3.7" | 0.0" | 12 | 0 | 57° – 65° |
| October | 58° | 41° | 3.8" | 0.1" | 15 | 0 | 45° – 56° |
| November | 46° | 30° | 2.8" | 4.6" | 13 | 4 | 32° – 44° |
| December | 35° | 22° | 2.6" | 9.3" | 16 | 13 | 20° – 39° |
| Year | 55° | 37° | 37.9" | 54.8" | 164 | 70 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 9° to 33°. September is the most reliable, staying within 8°.
Where South Bristol’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at South Bristol’s center.
- Snow: Honeoye, NY.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Honeoye, NY, 9 miles from the town’s center, 860 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about South Bristol’s climate
What is the weather like in South Bristol?
A typical July afternoon reaches 78°, a January night drops to 15°, and about 55 inches of snow falls in a normal winter. Colder January nights than 85% of U.S. towns; cooler July afternoons than 96% of U.S. towns.
How cold does it get in South Bristol in winter?
January nights average 15°. About 144 nights a year reach 32° or below and 9 reach 0° or below. In the coldest January of the last 30 years the month averaged 12°.
How much snow does South Bristol get?
About 55 inches in a normal winter at Honeoye, NY, heaviest from January through February, about 14 inches a month, with snow on the ground about 70 days a year.
How hot does it get in South Bristol?
July, with a typical high of 78° and a low of 59°. About 6 days a year reach 90° (Honeoye, NY).
When is the first and last frost in South Bristol?
In half of years the last spring frost (32°) comes by May 10 and the first fall frost by October 4, about 147 frost-free days, at Honeoye, NY.
What growing zone is South Bristol in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −8°.
What is the best time of year to visit South Bristol?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is South Bristol getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 53% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in South Bristol.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.