Westfield, New York climate: Normal weather by month, frost dates and records
Westfield's normal year runs from 21°F January nights to 83°F July afternoons, with 43.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.3°C, January lows of −6°C, July highs of 28°C, 1,106 mm of precipitation a year.
- NOAA stationWestfield (2 mi SSE)
- Station IDUSC00309189
- Location42.30°N 79.59°W
- Elevation707 ft (216 m)
- From the center2 miles
- Population2,887
On October 22, the normal high in Westfield is 59°F and the normal low 45°F, and the chance of measurable rain or snow is 43%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Westfield.
- Jan 34° 21°
- Feb 36° 21°
- Mar 44° 28°
- Apr 57° 38°
- May 69° 50°
- Jun 78° 60°
- Jul 83° 64°
- Aug 80° 63°
- Sep 73° 57°
- Oct 61° 47°
- Nov 49° 36°
- Dec 39° 28°
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 Westfield each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 21°F. The most precipitation falls in October (4.94 in), the least in February (2.42 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 34°F | 21°F | 27.2°F | 2.65 | 17 | <1 | 27 | 9 h 20 min |
| February | 36°F | 21°F | 28.3°F | 2.42 | 13 | <1 | 24 | 10 h 30 min |
| March | 44°F | 28°F | 35.8°F | 2.94 | 14 | <1 | 22 | 11 h 50 min |
| April | 57°F | 38°F | 47.7°F | 3.45 | 14 | <1 | 9 | 13 h 20 min |
| May | 69°F | 50°F | 59.4°F | 3.77 | 13 | <1 | <1 | 14 h 30 min |
| June | 78°F | 60°F | 69.0°F | 3.56 | 10 | 3 | <1 | 15 h 20 min |
| July | 83°F | 64°F | 73.4°F | 4.41 | 11 | 4 | <1 | 15 h |
| August | 80°F | 63°F | 71.4°F | 3.81 | 11 | 2 | <1 | 14 h |
| September | 73°F | 57°F | 65.1°F | 4.61 | 11 | <1 | <1 | 12 h 30 min |
| October | 61°F | 47°F | 53.9°F | 4.94 | 12 | <1 | 1 | 11 h 10 min |
| November | 49°F | 36°F | 42.6°F | 3.77 | 15 | <1 | 11 | 9 h 50 min |
| December | 39°F | 28°F | 33.5°F | 3.20 | 16 | <1 | 22 | 9 h 10 min |
| Year (annual) | 59°F | 43°F | 50.6°F | 43.53 | 156 | 9 | 117 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −6°C | −2.7°C | 67 mm |
| February | 2°C | −6°C | −2.1°C | 61 mm |
| March | 6°C | −2°C | 2.1°C | 75 mm |
| April | 14°C | 3°C | 8.7°C | 88 mm |
| May | 20°C | 10°C | 15.2°C | 96 mm |
| June | 26°C | 15°C | 20.6°C | 90 mm |
| July | 28°C | 18°C | 23.0°C | 112 mm |
| August | 27°C | 17°C | 21.9°C | 97 mm |
| September | 23°C | 14°C | 18.4°C | 117 mm |
| October | 16°C | 8°C | 12.2°C | 125 mm |
| November | 9°C | 2°C | 5.9°C | 96 mm |
| December | 4°C | −2°C | 0.8°C | 81 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Fredonia (18 miles away), gets 76 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00309189; 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 Westfield?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, June 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 USC00309189.
When is the last frost in Westfield?
In Westfield, the last spring frost (32°F) comes after April 21 in half of years and after May 5 in one year in ten; the first autumn frost comes before November 5 in half of years and before October 23 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 211 year in 10 after May 5; 9 in 10 after April 8
- First autumn frost, half of years before
- November 51 year in 10 before October 23; 9 in 10 before November 19
NOAA puts the median frost-free season at 197 days, and the season without a hard freeze (28°F) at 217 days.
A hard freeze (28°F) comes after April 9 in half of springs and before November 14 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Westfield in zone 6b in ZIP code 14787, the nearest ZIP area.
Frost dates for every NOAA station in New York · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00309189; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Westfield?
In a normal year in Westfield, 9 days a year reach 90°F, 117 nights fall to 32°F or colder and 156 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 117a normal year
- Days that stay below freezing
- 39high of 32°F or less
- Days with 0.01 inch of precipitation
- 156a normal year
The highest temperature in this station's record (since 1895) is 100°F, on August 11, 1900; the lowest is −19°F, on February 11, 1979.
The wettest calendar year on that record is 1977, with 58.28 in; the snowiest season is 1977–78, with 147.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00309189; records: ACIS (NOAA Regional Climate Centers), station USC00309189. Records use complete months only; a month missing more than three days is left out.
How sunny is Westfield?
Over a year 69% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Westfield, 3.6 kWh per square metre a day. August is the sunniest month (79%) and December the cloudiest (47%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 52% | 1.4 |
| February | 56% | 2.2 |
| March | 60% | 3.3 |
| April | 65% | 4.5 |
| May | 71% | 5.5 |
| June | 75% | 6.0 |
| July | 79% | 6.0 |
| August | 79% | 5.4 |
| September | 76% | 4.2 |
| October | 63% | 2.6 |
| November | 58% | 1.6 |
| December | 47% | 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 Westfield need?
A normal year in Westfield brings 5,998 heating degree days, 12% more than the median U.S. place (5,373), and 785 cooling degree days, 13% 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 3,049 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,173 | 0 |
| February | 1,029 | 0 |
| March | 905 | 0 |
| April | 526 | 7 |
| May | 222 | 49 |
| June | 42 | 161 |
| July | 4 | 263 |
| August | 7 | 206 |
| September | 85 | 88 |
| October | 356 | 12 |
| November | 674 | 0 |
| December | 975 | 0 |
| Year (annual) | 5,998 | 785 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00309189. 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 Westfield's climate compare?
Westfield is warmer than 109 of the other 130 places with their own NOAA record in New York, and wetter than 64. Across the 7,247 U.S. stations with normals, its annual mean of 50.6°F is warmer than 43%.
In the Köppen classification computed from these normals, Westfield 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 Westfield share this climate record?
5 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.
- North East, PA4,055 people · 14 mi SW
- Mayville, NY1,441 people · 5 mi SE
- Ripley, NY937 people · 7 mi W
- Sherman, NY667 people · 9 mi S
- Chautauqua, NY340 people · 8 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 Westfield's climate
What is the coldest month in Westfield?
January, with a normal high of 34°F and a normal low of 21°F. The warmest is July (83°F by day, 64°F at night).
Does it snow in Westfield?
Yes. NOAA publishes no 1991-2020 snowfall normal for Westfield's NOAA station; the nearest record that keeps one, Fredonia (18 miles away), records 76 inches of snow in a normal year.
What is the rainiest month in Westfield?
October, with 4.94 in of precipitation in a normal year; the driest is February with 2.42 in.
What plant hardiness zone is Westfield in?
The USDA's 2023 map puts Westfield in zone 6b in ZIP code 14787, the nearest ZIP area.
How late can frost come in Westfield?
In half of years the last 32°F night comes after April 21; in one year in ten it comes after May 5. Waiting until May 5 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
- Portland1 SW, NY7 miles from this station, 50.2°F a year
- Fredonia, NY17 miles from this station, 50.7°F a year
- Dunkirk, NY21 miles from this station, 48.8°F a year
- Jamestown, NY25 miles from this station, 47.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made