Photo: Doug Kerr from now in Binghamton, NY · CC BY-SA 2.0Dannemora gets about 107 inches of snow a winter, more than 98% of U.S. towns
High summer brings afternoon highs near 75°. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 70° apart. In July, afternoons here are cooler than in 98% of U.S. towns. Garden planting can start around May 6; autumn frost returns near October 11.
A year in Dannemora at a glance
Each month’s typical high and low, and what it brings.
What stands out about Dannemora’s climate
Compared with towns across the U.S., with Dannemora’s place in New York beside it.
What a year in Dannemora feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 157 frost-free days a year
In half of years the last 32° night comes by May 6 and the first by October 11. Frost and day counts come from NOAA’s station at Dannemora, NY, 0.1 miles from the town’s center, at about the same height.
The 2023 USDA map puts Dannemora’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −17°. 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 107 inches of snow a winter
Snow, measured at Ellenburg Depot, NY, falls mostly in January, February and December. Precipitation (rain plus melted snow) adds up to 43 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 155 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Dannemora
95% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Dannemora, NY.
Living with Dannemora’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
157 frost-free days in zone 5a. The last frost comes by May 6 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. 2.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Dannemora from natural hazards, river flooding is the largest share (83%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Dannemora and similar climates
TownRatings has no climate map of the towns around Dannemora yet.
Climates most like Dannemora’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 |
|---|---|---|---|---|
| Dannemora, NY | 5° | 75° | 43" | 107" |
| Caribou, ME | 2° | 77° | 41" | 118" |
| Sault Ste. Marie, MI | 8° | 76° | 37" | 120" |
| Minocqua, WI | 3° | 77° | 33" | 99" |
| Hermantown, MN | 2° | 77° | 31" | 90" |
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 Dannemora averaged 1.5° warmer than the 1900s. The biggest change is in December (+3.5°).
A bigger shift than in 59% 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 Dannemora compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Dannemora’s place among New York’s.
Dannemora weather by month
Highs, lows and precipitation from NOAA’s grid at Dannemora’s center; snow, wet days and snow on the ground from Ellenburg Depot, NY. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 24° | 5° | 2.8" | 21.4" | 14 | 28 | 1° – 24° |
| February | 26° | 7° | 2.4" | 23.1" | 11 | 25 | 3° – 24° |
| March | 35° | 16° | 2.9" | 19.0" | 12 | 21 | 16° – 37° |
| April | 49° | 29° | 3.6" | 9.8" | 12 | 5 | 33° – 45° |
| May | 63° | 41° | 4.0" | 0.5" | 13 | 0 | 46° – 57° |
| June | 71° | 51° | 4.7" | 0.0" | 14 | 0 | 58° – 65° |
| July | 75° | 56° | 4.2" | 0.0" | 13 | 0 | 60° – 70° |
| August | 73° | 54° | 4.1" | 0.0" | 12 | 0 | 61° – 67° |
| September | 66° | 47° | 3.7" | 0.0" | 12 | 0 | 52° – 61° |
| October | 53° | 36° | 4.6" | 1.8" | 14 | 1 | 40° – 53° |
| November | 40° | 25° | 3.1" | 8.0" | 13 | 7 | 26° – 39° |
| December | 29° | 13° | 3.1" | 23.5" | 15 | 23 | 13° – 32° |
| Year | 50° | 32° | 43.2" | 107.1" | 155 | 109 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 1° to 24°. August is the most reliable, staying within 6°.
Where Dannemora’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 Dannemora’s center.
- Snow: Ellenburg Depot, NY.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Dannemora, NY, 0.1 miles from the town’s center, at about the same height; 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 Dannemora’s climate
What is the weather like in Dannemora?
A typical July afternoon reaches 75°, a January night drops to 5°, and about 107 inches of snow falls in a normal winter. Colder January nights than 98% of U.S. towns; cooler July afternoons than 98% of U.S. towns.
How cold does it get in Dannemora in winter?
January nights average 5°. About 158 nights a year reach 32° or below and 20 reach 0° or below. In the coldest January of the last 30 years the month averaged 1°.
How much snow does Dannemora get?
About 107 inches in a normal winter at Ellenburg Depot, NY, most of it in January, February and December, with snow on the ground about 109 days a year.
How hot does it get in Dannemora?
July, with a typical high of 75° and a low of 56°. About 2 days a year reach 90° (Dannemora, NY).
When is the first and last frost in Dannemora?
In half of years the last spring frost (32°) comes by May 6 and the first fall frost by October 11, about 157 frost-free days, at Dannemora, NY.
What growing zone is Dannemora in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −17°.
What is the best time of year to visit Dannemora?
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 Dannemora getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 59% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Dannemora.
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.