Dannemora, New York climate: Normal weather by month, frost dates and records
Dannemora's normal year runs from 9°F January nights to 79°F July afternoons, with 43.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.1°C, January lows of −13°C, July highs of 26°C, 1,101 mm of precipitation a year.
- NOAA stationDannemora
- Station IDUSC00301966
- Location44.72°N 73.72°W
- Elevation1,340 ft (408 m)
- From the centerunder 1 mile
- Population2,384
On October 23, the normal high in Dannemora is 54°F and the normal low 36°F, and the chance of measurable rain or snow is 47%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Dannemora.
- Jan 28° 9°
- Feb 31° 11°
- Mar 40° 20°
- Apr 53° 33°
- May 67° 45°
- Jun 75° 54°
- Jul 79° 59°
- Aug 78° 57°
- Sep 71° 50°
- Oct 58° 39°
- Nov 44° 28°
- Dec 33° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Dannemora each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 9°F. The most precipitation falls in June (4.90 in), the least in February (2.27 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 28°F | 9°F | 18.1°F | 2.92 | 13 | <1 | 30 | 9 h 10 min |
| February | 31°F | 11°F | 20.6°F | 2.27 | 11 | <1 | 27 | 10 h 20 min |
| March | 40°F | 20°F | 29.8°F | 2.80 | 12 | <1 | 26 | 11 h 50 min |
| April | 53°F | 33°F | 42.9°F | 3.83 | 12 | <1 | 15 | 13 h 30 min |
| May | 67°F | 45°F | 56.1°F | 3.95 | 14 | <1 | 2 | 14 h 50 min |
| June | 75°F | 54°F | 64.6°F | 4.90 | 14 | <1 | <1 | 15 h 30 min |
| July | 79°F | 59°F | 69.0°F | 4.24 | 13 | 1 | <1 | 15 h 20 min |
| August | 78°F | 57°F | 67.4°F | 4.08 | 13 | <1 | <1 | 14 h 10 min |
| September | 71°F | 50°F | 60.3°F | 3.85 | 12 | <1 | <1 | 12 h 40 min |
| October | 58°F | 39°F | 48.2°F | 4.67 | 15 | <1 | 8 | 11 h |
| November | 44°F | 28°F | 35.9°F | 2.91 | 13 | <1 | 21 | 9 h 40 min |
| December | 33°F | 16°F | 24.6°F | 2.94 | 14 | <1 | 29 | 8 h 50 min |
| Year (annual) | 55°F | 35°F | 44.8°F | 43.36 | 156 | 2 | 158 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −2°C | −13°C | −7.7°C | 74 mm |
| February | −1°C | −12°C | −6.3°C | 58 mm |
| March | 4°C | −7°C | −1.2°C | 71 mm |
| April | 12°C | 0°C | 6.1°C | 97 mm |
| May | 19°C | 7°C | 13.4°C | 100 mm |
| June | 24°C | 12°C | 18.1°C | 124 mm |
| July | 26°C | 15°C | 20.6°C | 108 mm |
| August | 25°C | 14°C | 19.7°C | 104 mm |
| September | 22°C | 10°C | 15.7°C | 98 mm |
| October | 14°C | 4°C | 9.0°C | 119 mm |
| November | 7°C | −2°C | 2.2°C | 74 mm |
| December | 1°C | −9°C | −4.1°C | 75 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Ellenburg Depot (14 miles away), gets 107 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00301966; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Dannemora?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (12).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00301966.
When is the last frost in Dannemora?
In Dannemora, the last spring frost (32°F) comes after May 6 in half of years and after May 21 in one year in ten; the first autumn frost comes before October 11 in half of years and before September 29 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 61 year in 10 after May 21; 9 in 10 after April 23
- First autumn frost, half of years before
- October 111 year in 10 before September 29; 9 in 10 before October 26
NOAA puts the median frost-free season at 157 days, and the season without a hard freeze (28°F) at 178 days.
A hard freeze (28°F) comes after April 26 in half of springs and before October 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dannemora in zone 5a in ZIP code 12929. By the map's own method, the average of each year's coldest night over 1991-2020, Dannemora's NOAA station is in zone 5a: the coldest night of a typical year reaches −17°F (29 complete years).
Frost dates for every NOAA station in New York · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00301966; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Dannemora?
In a normal year in Dannemora, 2 days a year reach 90°F, 158 nights fall to 32°F or colder and 156 days bring measurable precipitation.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 158a normal year
- Days that stay below freezing
- 70high of 32°F or less
- Days with 0.01 inch of precipitation
- 156a normal year
The highest temperature in this station's record (since 1906) is 98°F, on July 20, 1978; the lowest is −39°F, on February 4, 2023.
The wettest calendar year on that record is 2005, with 59.23 in; the snowiest season is 1970–71, with 168.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00301966; records: ACIS (NOAA Regional Climate Centers), station USC00301966. Records use complete months only; a month missing more than three days is left out.
How sunny is Dannemora?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dannemora, 3.5 kWh per square metre a day. August is the sunniest month (75%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 60% | 1.5 |
| February | 62% | 2.3 |
| March | 65% | 3.4 |
| April | 66% | 4.5 |
| May | 67% | 5.2 |
| June | 69% | 5.6 |
| July | 74% | 5.7 |
| August | 75% | 5.1 |
| September | 75% | 4.0 |
| October | 62% | 2.4 |
| November | 60% | 1.6 |
| December | 54% | 1.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Dannemora need?
A normal year in Dannemora brings 7,718 heating degree days, 44% more than the median U.S. place (5,373), and 390 cooling degree days, 57% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,253 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,454 | 0 |
| February | 1,242 | 0 |
| March | 1,091 | 0 |
| April | 666 | 2 |
| May | 297 | 21 |
| June | 87 | 73 |
| July | 19 | 145 |
| August | 36 | 111 |
| September | 176 | 37 |
| October | 524 | 2 |
| November | 873 | 0 |
| December | 1,252 | 0 |
| Year (annual) | 7,718 | 390 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00301966. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Dannemora been warmer than normal lately?
2023 averaged 46.9°F, 2.1°F above the 1991-2020 normal of 44.8°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 46.5°F | +1.7°F | 38.68 |
| 2022 | 45.8°F | +1.0°F | 45.05 |
| 2023 | 46.9°F | +2.1°F | 51.88 |
Over 92 complete years from 1906 to 2023, the station's annual mean temperature rose at a fitted 2.9°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00301966; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Dannemora's climate compare?
Dannemora is warmer than 18 of the other 130 places with their own NOAA record in New York, and wetter than 62. Across the 7,247 U.S. stations with normals, its annual mean of 44.8°F is warmer than 18%.
In the Köppen classification computed from these normals, Dannemora is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Dannemora share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Cadyville, NY509 people · 4 mi SE
- Redford, NY243 people · 9 mi SW
- Lyon Mountain, NY240 people · 7 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Dannemora's climate
What is the coldest month in Dannemora?
January, with a normal high of 28°F and a normal low of 9°F. The warmest is July (79°F by day, 59°F at night).
Does it snow in Dannemora?
Yes. NOAA publishes no 1991-2020 snowfall normal for Dannemora's NOAA station; the nearest record that keeps one, Ellenburg Depot (14 miles away), records 107 inches of snow in a normal year.
What is the rainiest month in Dannemora?
June, with 4.90 in of precipitation in a normal year; the driest is February with 2.27 in.
What plant hardiness zone is Dannemora in?
The USDA's 2023 map puts Dannemora in zone 5a in ZIP code 12929. By the same method at Dannemora's NOAA station, the coldest night of a typical year reaches −17°F (29 years, 1991-2020): zone 5a.
How late can frost come in Dannemora?
In half of years the last 32°F night comes after May 6; in one year in ten it comes after May 21. Waiting until May 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- New York climateThe statewide normals and every place in the state
- Peru, NY13 miles from this station, 46.2°F a year
- Plattsburgh, NY13 miles from this station, 45.3°F a year
- Ellenburg Depot, NY14 miles from this station, 43.4°F a year
- Chazy, NY19 miles from this station, 47.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made