Photo: Elisa.rolle · CC BY-SA 4.0Midwinter lows in Hillsdale sink below those of 84% of U.S. towns
Expect July afternoons of about 82°. Temperatures cover 67° across the year, low to high. Summers stay cool: July afternoons here are cooler than in 83% of U.S. towns. Garden planting can start around May 4; autumn frost returns near October 11.
A year in Hillsdale at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hillsdale’s climate
Compared with towns across the U.S., with Hillsdale’s place in New York beside it.
What a year in Hillsdale feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 160 frost-free days a year
In half of years the last 32° night comes by May 4 and the first by October 11. Frost and day counts come from NOAA’s station at Copake, NY, 8 miles from the town’s center, 410 ft lower.
The 2023 USDA map puts Hillsdale’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. 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 50 inches of snow a winter
Snow, measured at Copake, NY, falls mostly in January. Precipitation (rain plus melted snow) adds up to 44 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 133 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Hillsdale
92% 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 Copake, NY.
Living with Hillsdale’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
160 frost-free days in zone 5b. The last frost comes by May 4 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 11.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 3.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Hillsdale from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Hillsdale and its neighbors
Claverack the hottest July afternoons (84°, 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 Hillsdale’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 |
|---|---|---|---|---|
| Hillsdale, NY | 15° | 82° | 44" | 50" |
| Ontario, OH | 17° | 82° | 42" | 49" |
| South Berwick, ME | 14° | 82° | 48" | 56" |
| St. Marys, PA | 16° | 80° | 46" | 53" |
| Somersworth, NH | 14° | 82° | 48" | 39" |
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 Hillsdale averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.2°).
A bigger shift than in 80% 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 Hillsdale compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Hillsdale’s place among New York’s.
Hillsdale weather by month
Highs, lows and precipitation from NOAA’s grid at Hillsdale’s center; snow, wet days and snow on the ground from Copake, NY. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 33° | 15° | 3.0" | 15.5" | 12 | 13° – 31° |
| February | 36° | 17° | 2.4" | 10.0" | 9 | 13° – 32° |
| March | 44° | 25° | 3.1" | 10.0" | 12 | 27° – 45° |
| April | 58° | 35° | 3.4" | 1.8" | 12 | 41° – 51° |
| May | 69° | 46° | 3.6" | 0.0" | 14 | 53° – 63° |
| June | 77° | 54° | 4.6" | 0.0" | 12 | 63° – 70° |
| July | 82° | 60° | 4.3" | 0.0" | 10 | 66° – 74° |
| August | 80° | 58° | 4.3" | 0.0" | 10 | 65° – 72° |
| September | 72° | 51° | 4.6" | 0.0" | 11 | 59° – 66° |
| October | 60° | 41° | 4.2" | 0.0" | 11 | 45° – 56° |
| November | 48° | 31° | 3.2" | 1.8" | 11 | 35° – 45° |
| December | 37° | 21° | 3.6" | 10.5" | 11 | 23° – 41° |
| Year | 58° | 38° | 44.2" | 49.6" | 133 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 13° to 32°. August is the most reliable, staying within 7°.
Where Hillsdale’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 Hillsdale’s center.
- Snow: Copake, NY.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Copake, NY, 8 miles from the town’s center, 410 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- 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 Hillsdale’s climate
What is the weather like in Hillsdale?
A typical July afternoon reaches 82°, a January night drops to 15°, and about 50 inches of snow falls in a normal winter. Colder January nights than 84% of U.S. towns; cooler July afternoons than 83% of U.S. towns.
How cold does it get in Hillsdale in winter?
January nights average 15°. About 157 nights a year reach 32° or below and 11 reach 0° or below. In the coldest January of the last 30 years the month averaged 13°.
How much snow does Hillsdale get?
About 50 inches in a normal winter at Copake, NY, most of it in January.
How hot does it get in Hillsdale?
July, with a typical high of 82° and a low of 60°. About 13 days a year reach 90° (Copake, NY).
When is the first and last frost in Hillsdale?
In half of years the last spring frost (32°) comes by May 4 and the first fall frost by October 11, about 160 frost-free days, at Copake, NY.
What growing zone is Hillsdale in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit Hillsdale?
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 Hillsdale getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 80% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hillsdale.
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.