Photo: Daniel Case · CC BY-SA 3.0January in Millbrook bites harder than in 79% of U.S. towns
In July the day’s top temperature is typically 83°. A year here swings 67° from midwinter lows to midsummer highs. Summers stay cool: July afternoons here are cooler than in 70% of U.S. towns. The heating season runs November to April: each of those months averages under 50°.
A year in Millbrook at a glance
Each month’s typical high and low, and what it brings.
What stands out about Millbrook’s climate
Compared with towns across the U.S., with Millbrook’s place in New York beside it.
What a year in Millbrook feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 155 frost-free days a year
In half of years the last 32° night comes by May 4 and the first by October 7. Frost and day counts come from NOAA’s station at Millbrook 3 W, NY, 2.6 miles from the town’s center, 210 ft lower.
The 2023 USDA map puts Millbrook’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 58 inches of snow a winter
Snow, measured at Stormville, NY, is heaviest from January through March, about 14 inches a month. Precipitation (rain plus melted snow) adds up to 45 inches a year; August is the wettest month and February the driest. Rain or snow falls on about 134 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Millbrook
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 Millbrook 3 W, NY.
Living with Millbrook’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
155 frost-free days in zone 6a. 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 7.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 0.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Millbrook from natural hazards, river flooding is the largest share (61%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Millbrook and similar climates
TownRatings has no climate map of the towns around Millbrook yet.
Climates most like Millbrook’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 |
|---|---|---|---|---|
| Millbrook, NY | 16° | 83° | 45" | 58" |
| Plaistow, NH | 16° | 83° | 47" | 58" |
| Greenville, PA | 18° | 83° | 43" | 62" |
| Groveland, MA | 17° | 82° | 47" | 58" |
| Cortland, OH | 18° | 83° | 43" | 68" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Millbrook averaged 2.1° warmer than the 1900s. The biggest change is in December (+3.8°).
A bigger shift than in 92% 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 Millbrook compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Millbrook’s place among New York’s.
Millbrook weather by month
Highs, lows and precipitation from NOAA’s grid at Millbrook’s center; snow, wet days and snow on the ground from Stormville, NY. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 35° | 16° | 3.0" | 14.3" | 13 | 19 | 15° – 33° |
| February | 38° | 18° | 2.5" | 12.9" | 10 | 17 | 15° – 35° |
| March | 46° | 26° | 3.3" | 14.3" | 13 | 14 | 30° – 47° |
| April | 60° | 36° | 3.4" | 3.1" | 13 | 1 | 43° – 53° |
| May | 70° | 47° | 3.7" | 0.0" | 13 | 0 | 53° – 65° |
| June | 78° | 56° | 4.4" | 0.0" | 11 | 0 | 65° – 70° |
| July | 83° | 61° | 4.3" | 0.0" | 11 | 0 | 67° – 76° |
| August | 81° | 59° | 4.6" | 0.0" | 10 | 0 | 67° – 74° |
| September | 73° | 52° | 4.5" | 0.0" | 10 | 0 | 60° – 68° |
| October | 62° | 41° | 4.4" | 0.0" | 9 | 0 | 47° – 58° |
| November | 50° | 31° | 3.3" | 2.1" | 11 | 1 | 36° – 45° |
| December | 39° | 23° | 3.6" | 11.2" | 11 | 11 | 23° – 43° |
| Year | 60° | 39° | 44.7" | 57.9" | 134 | 63 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 15° to 35°. June is the most reliable, staying within 6°.
Where Millbrook’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 Millbrook’s center.
- Snow: Stormville, NY.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Millbrook 3 W, NY, 2.6 miles from the town’s center, 210 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 Millbrook’s climate
What is the weather like in Millbrook?
A typical July afternoon reaches 83°, a January night drops to 16°, and about 58 inches of snow falls in a normal winter. Colder January nights than 79% of U.S. towns; cooler July afternoons than 70% of U.S. towns.
How cold does it get in Millbrook in winter?
January nights average 16°. About 141 nights a year reach 32° or below and 6 reach 0° or below. In the coldest January of the last 30 years the month averaged 15°.
How much snow does Millbrook get?
About 58 inches in a normal winter at Stormville, NY, heaviest from January through March, about 14 inches a month, with snow on the ground about 63 days a year.
How hot does it get in Millbrook?
July, with a typical high of 83° and a low of 61°. About 9 days a year reach 90° (Millbrook 3 W, NY).
When is the first and last frost in Millbrook?
In half of years the last spring frost (32°) comes by May 4 and the first fall frost by October 7, about 155 frost-free days, at Millbrook 3 W, NY.
What growing zone is Millbrook 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 Millbrook?
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 Millbrook getting warmer?
Yes: 1991–2020 averaged 2.1° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 92% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Millbrook.
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.