Troy, New York climate: Normal weather by month, frost dates and records
Troy's normal year runs from 17°F January nights to 86°F July afternoons, with 42.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.5°C, January lows of −8°C, July highs of 30°C, 1,069 mm of precipitation a year.
- NOAA stationTroy Lock and Dam
- Station IDUSC00308600
- Location42.75°N 73.69°W
- Elevation15 ft (5 m)
- From the center1 miles
- Population51,065
On October 14, the normal high in Troy is 65°F and the normal low 44°F, and the chance of measurable rain or snow is 38%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Troy.
- Jan 34° 17°
- Feb 37° 18°
- Mar 46° 26°
- Apr 60° 38°
- May 73° 49°
- Jun 81° 59°
- Jul 86° 64°
- Aug 84° 62°
- Sep 77° 54°
- Oct 64° 43°
- Nov 51° 33°
- Dec 40° 25°
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 Troy each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 17°F. The most precipitation falls in July (4.64 in), the least in February (2.43 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 34°F | 17°F | 25.5°F | 2.65 | 10 | <1 | 28 | 9 h 20 min |
| February | 37°F | 18°F | 27.7°F | 2.43 | 8 | <1 | 26 | 10 h 30 min |
| March | 46°F | 26°F | 36.1°F | 2.91 | 9 | <1 | 24 | 11 h 50 min |
| April | 60°F | 38°F | 48.9°F | 3.09 | 11 | <1 | 8 | 13 h 20 min |
| May | 73°F | 49°F | 60.9°F | 3.79 | 12 | 1 | <1 | 14 h 40 min |
| June | 81°F | 59°F | 69.7°F | 4.61 | 11 | 3 | <1 | 15 h 20 min |
| July | 86°F | 64°F | 74.9°F | 4.64 | 11 | 5 | <1 | 15 h |
| August | 84°F | 62°F | 73.1°F | 3.92 | 10 | 3 | <1 | 14 h |
| September | 77°F | 54°F | 65.8°F | 3.83 | 10 | 1 | <1 | 12 h 30 min |
| October | 64°F | 43°F | 53.4°F | 4.23 | 12 | <1 | 4 | 11 h 10 min |
| November | 51°F | 33°F | 42.1°F | 2.84 | 10 | <1 | 16 | 9 h 50 min |
| December | 40°F | 25°F | 32.2°F | 3.15 | 10 | <1 | 25 | 9 h |
| Year (annual) | 61°F | 41°F | 50.9°F | 42.09 | 126 | 13 | 131 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −8°C | −3.6°C | 67 mm |
| February | 3°C | −8°C | −2.4°C | 62 mm |
| March | 8°C | −3°C | 2.3°C | 74 mm |
| April | 16°C | 3°C | 9.4°C | 78 mm |
| May | 23°C | 10°C | 16.1°C | 96 mm |
| June | 27°C | 15°C | 20.9°C | 117 mm |
| July | 30°C | 18°C | 23.8°C | 118 mm |
| August | 29°C | 17°C | 22.8°C | 100 mm |
| September | 25°C | 12°C | 18.8°C | 97 mm |
| October | 18°C | 6°C | 11.9°C | 107 mm |
| November | 11°C | 1°C | 5.6°C | 72 mm |
| December | 4°C | −4°C | 0.1°C | 80 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Albany (6 miles away), gets 59 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00308600; 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 Troy?
Normal highs sit between 65°F and 85°F in May, June, August and September. Of those, September has the fewest days with rain (10).
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 USC00308600.
When is the last frost in Troy?
In Troy, the last spring frost (32°F) comes after April 19 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 26 in half of years and before October 11 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
- April 191 year in 10 after May 3; 9 in 10 after April 6
- First autumn frost, half of years before
- October 261 year in 10 before October 11; 9 in 10 before November 10
NOAA puts the median frost-free season at 190 days, and the season without a hard freeze (28°F) at 212 days.
A hard freeze (28°F) comes after April 7 in half of springs and before November 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Troy in zone 6a across its 2 ZIP code areas (6a in 12180, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Troy's NOAA station is in zone 6a: the coldest night of a typical year reaches −7°F (21 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 USC00308600; 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.
What hardiness zone is each Troy ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Troy's 2 ZIP code areas are all in zone 6a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Troy?
In a normal year in Troy, 13 days a year reach 90°F, 131 nights fall to 32°F or colder and 126 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 131a normal year
- Days that stay below freezing
- 38high of 32°F or less
- Days with 0.01 inch of precipitation
- 126a normal year
The highest temperature in this station's record (since 1932) is 101°F, on July 15, 1995; the lowest is −23°F, on January 27, 1994.
The wettest calendar year on that record is 2003, with 49.43 in; the snowiest season is 1970–71, with 96.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00308600; records: ACIS (NOAA Regional Climate Centers), station USC00308600. Records use complete months only; a month missing more than three days is left out.
How sunny is Troy?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Troy, 3.7 kWh per square metre a day. July is the sunniest month (77%) and December the cloudiest (57%). Among the 459 U.S. places of 50,000 or more, that ranks tied 428th (with 16 others) in sunshine.
| 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 much heating and cooling does Troy need?
A normal year in Troy brings 6,006 heating degree days, 12% more than the median U.S. place (5,373), and 896 cooling degree days, 1% 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 3,188 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,223 | 0 |
| February | 1,046 | 0 |
| March | 896 | 0 |
| April | 487 | 5 |
| May | 175 | 48 |
| June | 27 | 169 |
| July | 1 | 306 |
| August | 5 | 258 |
| September | 77 | 101 |
| October | 367 | 9 |
| November | 687 | 0 |
| December | 1,017 | 0 |
| Year (annual) | 6,006 | 896 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00308600. 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.
How does Troy's climate compare?
Troy is warmer than 112 of the other 130 places with their own NOAA record in New York, and wetter than 55. Across the 7,247 U.S. stations with normals, its annual mean of 50.9°F is warmer than 44%.
In the Köppen classification computed from these normals, Troy is Dfa: continental, no dry season, hot 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 Troy share this climate record?
12 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.
- Cohoes, NY18,530 people · 2 mi NW
- Watervliet, NY10,268 people · 2 mi SW
- Rensselaer, NY9,453 people · 8 mi S
- East Greenbush, NY6,562 people · 11 mi S
- Hampton Manor, NY5,448 people · 9 mi S
- Mechanicville, NY5,083 people · 11 mi N
- Menands, NY4,501 people · 5 mi SW
- Wynantskill, NY3,675 people · 5 mi SE
- West Sand Lake, NY3,453 people · 9 mi SE
- Green Island, NY2,971 people · 0 mi SW
- Waterford, NY2,020 people · 3 mi N
- Averill Park, NY1,604 people · 10 mi SE
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 Troy's climate
What is the coldest month in Troy?
January, with a normal high of 34°F and a normal low of 17°F. The warmest is July (86°F by day, 64°F at night).
Does it snow in Troy?
Yes. NOAA publishes no 1991-2020 snowfall normal for Troy's NOAA station; the nearest record that keeps one, Albany (6 miles away), records 59 inches of snow in a normal year.
What is the rainiest month in Troy?
July, with 4.64 in of precipitation in a normal year; the driest is February with 2.43 in.
What plant hardiness zone is Troy in?
The USDA's 2023 map puts Troy in zone 6a across its 2 ZIP code areas (6a in 12180, the largest). By the same method at Troy's NOAA station, the coldest night of a typical year reaches −7°F (21 years, 1991-2020): zone 6a.
How late can frost come in Troy?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Troy in OctoberThis month day by day, its records and recent years
- New York climateThe statewide normals and every place in the state
- Albany, NY6 miles from this station, 49.4°F a year
- Grafton, NY11 miles from this station, 46.1°F a year
- Buskirk, NY18 miles from this station, 46.9°F a year
- Saratoga Springs, NY21 miles from this station, 48.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made