Alcove Dam, New York climate: Climate normals at a NOAA weather station
Alcove Dam's normal year runs from 13°F January nights to 80°F July afternoons, with 42.5 inches of precipitation and 46 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.0°C, January lows of −11°C, July highs of 26°C, 1,080 mm of precipitation a year.
- NOAA stationAlcove Dam
- Station IDUSC00300063
- Location42.47°N 73.93°W
- Elevation607 ft (185 m)
On October 23, the normal high in Alcove Dam is 56°F and the normal low 37°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Alcove Dam.
- Jan 32° 13°
- Feb 34° 13°
- Mar 43° 22°
- Apr 56° 34°
- May 68° 45°
- Jun 75° 54°
- Jul 80° 59°
- Aug 78° 58°
- Sep 71° 50°
- Oct 59° 39°
- Nov 47° 29°
- Dec 37° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Alcove Dam each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 13°F. The most precipitation falls in October (4.63 in), the least in February (2.22 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 13°F | 22.1°F | 2.63 | 11.4 | 11 | <1 | 30 | 9 h 20 min |
| February | 34°F | 13°F | 23.6°F | 2.22 | 11.6 | 9 | <1 | 27 | 10 h 30 min |
| March | 43°F | 22°F | 32.2°F | 3.28 | 9.8 | 10 | <1 | 27 | 11 h 50 min |
| April | 56°F | 34°F | 44.9°F | 3.56 | 0.8 | 11 | <1 | 14 | 13 h 20 min |
| May | 68°F | 45°F | 56.4°F | 3.34 | 0.0 | 12 | <1 | 1 | 14 h 30 min |
| June | 75°F | 54°F | 64.8°F | 4.32 | 0.0 | 12 | 1 | <1 | 15 h 20 min |
| July | 80°F | 59°F | 69.3°F | 3.93 | 0.0 | 12 | 2 | <1 | 15 h |
| August | 78°F | 58°F | 67.8°F | 4.42 | 0.0 | 12 | 1 | <1 | 14 h |
| September | 71°F | 50°F | 60.3°F | 3.88 | 0.0 | 11 | <1 | <1 | 12 h 30 min |
| October | 59°F | 39°F | 48.9°F | 4.63 | 0.1 | 12 | <1 | 8 | 11 h 10 min |
| November | 47°F | 29°F | 38.3°F | 2.87 | 0.6 | 9 | <1 | 21 | 9 h 50 min |
| December | 37°F | 21°F | 28.6°F | 3.45 | 11.4 | 10 | <1 | 28 | 9 h 10 min |
| Year (annual) | 57°F | 36°F | 46.4°F | 42.53 | 45.7 | 131 | 4 | 156 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −11°C | −5.5°C | 67 mm | 29 cm |
| February | 1°C | −10°C | −4.7°C | 56 mm | 29 cm |
| March | 6°C | −6°C | 0.1°C | 83 mm | 25 cm |
| April | 13°C | 1°C | 7.2°C | 90 mm | 2 cm |
| May | 20°C | 7°C | 13.6°C | 85 mm | 0 cm |
| June | 24°C | 12°C | 18.2°C | 110 mm | 0 cm |
| July | 26°C | 15°C | 20.7°C | 100 mm | 0 cm |
| August | 26°C | 14°C | 19.9°C | 112 mm | 0 cm |
| September | 22°C | 10°C | 15.7°C | 99 mm | 0 cm |
| October | 15°C | 4°C | 9.4°C | 118 mm | 0 cm |
| November | 9°C | −1°C | 3.5°C | 73 mm | 2 cm |
| December | 3°C | −6°C | −1.9°C | 88 mm | 29 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00300063; 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.
Which months are mildest at Alcove Dam?
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 (11).
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 USC00300063.
When is the last frost at Alcove Dam?
In Alcove Dam, the last spring frost (32°F) comes after May 3 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 12 in half of years and before October 1 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 31 year in 10 after May 18; 9 in 10 after April 20
- First autumn frost, half of years before
- October 121 year in 10 before October 1; 9 in 10 before October 27
NOAA puts the median frost-free season at 160 days, and the season without a hard freeze (28°F) at 185 days.
A hard freeze (28°F) comes after April 21 in half of springs and before October 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Alcove Dam in zone 5b in ZIP code 12007, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 5b: the coldest night of a typical year reaches −10°F (20 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 USC00300063; 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 at Alcove Dam?
In a normal year in Alcove Dam, 4 days a year reach 90°F, 156 nights fall to 32°F or colder and 131 days bring measurable precipitation.
- Days at 90°F or more
- 4a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 156a normal year
- Days that stay below freezing
- 45high of 32°F or less
- Days with 0.01 inch of precipitation
- 131a normal year
- Days with 1 inch of snow or more
- 10a normal year
The highest temperature in this station's record (since 1942) is 102°F, on August 6, 1955; the lowest is −29°F, on January 21, 1994.
The wettest calendar year on that record is 2011, with 63.69 in; the snowiest season is 2004–05, with 64.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00300063; records: ACIS (NOAA Regional Climate Centers), station USC00300063. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Alcove Dam?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds at Alcove Dam, 3.7 kWh per square metre a day. July is the sunniest month (77%) and December the cloudiest (57%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 61% | 1.6 |
| February | 64% | 2.5 |
| March | 66% | 3.6 |
| April | 67% | 4.6 |
| May | 68% | 5.3 |
| June | 71% | 5.8 |
| July | 77% | 6.0 |
| August | 77% | 5.3 |
| September | 76% | 4.3 |
| October | 65% | 2.7 |
| November | 65% | 1.8 |
| December | 57% | 1.3 |
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 many heating and cooling degree days does Alcove Dam record?
A normal year at Alcove Dam brings 7,125 heating degree days, 33% more than the median U.S. place (5,373), and 394 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 2,281 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,330 | 0 |
| February | 1,159 | 0 |
| March | 1,017 | 0 |
| April | 604 | 2 |
| May | 285 | 18 |
| June | 81 | 73 |
| July | 17 | 149 |
| August | 30 | 117 |
| September | 172 | 33 |
| October | 502 | 2 |
| November | 800 | 0 |
| December | 1,128 | 0 |
| Year (annual) | 7,125 | 394 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00300063. 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.
Have recent years at Alcove Dam been warmer than normal?
2024 averaged 49.7°F, 3.3°F above the 1991-2020 normal of 46.4°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 48.0°F | +1.6°F | 47.32 | – |
| 2024 | 49.7°F | +3.3°F | 41.18 | – |
Over 45 complete years from 1952 to 2024, the station's annual mean temperature rose at a fitted 4.8°F per century (+0.27°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00300063; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Alcove Dam's climate compare?
Alcove Dam is warmer than 51 of the 131 places with their own NOAA record in New York, and wetter than 58. Across the 7,247 U.S. stations with normals, its annual mean of 46.4°F is warmer than 25%.
In the Köppen classification computed from these normals, Alcove Dam 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 Alcove Dam share this climate record?
2 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.
- Ravena, NY3,246 people · 6 mi E
- Greenville, NY692 people · 6 mi SW
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 Alcove Dam's climate
What is the coldest month at Alcove Dam?
January, with a normal high of 32°F and a normal low of 13°F. The warmest is July (80°F by day, 59°F at night).
Does it snow at Alcove Dam?
Yes: 46 inches in a normal year, falling on 16 days with 0.1 inch or more, the most in February (11.6 inches).
What is the rainiest month at Alcove Dam?
October, with 4.63 in of precipitation in a normal year; the driest is February with 2.22 in.
What plant hardiness zone is Alcove Dam in?
The USDA's 2023 map puts Alcove Dam in zone 5b in ZIP code 12007, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −10°F (20 years, 1991-2020): zone 5b.
How late can frost come at Alcove Dam?
In half of years the last 32°F night comes after May 3; in one year in ten it comes after May 18. Waiting until May 18 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
- Cairo, NY12 miles from this station, 49.0°F a year
- Valatie, NY12 miles from this station, 49.5°F a year
- Hudson, NY17 miles from this station, 51.1°F a year
- East Jewett, NY20 miles from this station, 43.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made