Newark, Ohio climate: Normal weather by month, frost dates and records
Newark's normal year runs from 21°F January nights to 86°F July afternoons, with 38.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.8°C, January lows of −6°C, July highs of 30°C, 985 mm of precipitation a year.
- NOAA stationNewark Heath Airport
- Station IDUSW00004858
- Location40.02°N 82.46°W
- Elevation884 ft (269 m)
- Population51,424
On October 14, the normal high in Newark is 68°F and the normal low 43°F, and the chance of measurable rain or snow is 39%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Newark.
- Jan 39° 21°
- Feb 42° 23°
- Mar 52° 31°
- Apr 65° 41°
- May 75° 51°
- Jun 83° 60°
- Jul 86° 63°
- Aug 84° 61°
- Sep 79° 53°
- Oct 67° 42°
- Nov 54° 33°
- Dec 43° 27°
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 Newark each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 21°F. The most precipitation falls in May (4.08 in), the least in February (2.24 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 39°F | 21°F | 29.9°F | 2.67 | 12 | <1 | 26 | 9 h 40 min |
| February | 42°F | 23°F | 32.7°F | 2.24 | 10 | <1 | 24 | 10 h 40 min |
| March | 52°F | 31°F | 41.7°F | 3.40 | 12 | <1 | 19 | 11 h 50 min |
| April | 65°F | 41°F | 53.1°F | 3.82 | 13 | <1 | 7 | 13 h 10 min |
| May | 75°F | 51°F | 63.1°F | 4.08 | 15 | 1 | 1 | 14 h 20 min |
| June | 83°F | 60°F | 71.5°F | 4.06 | 13 | 3 | <1 | 15 h |
| July | 86°F | 63°F | 74.7°F | 3.98 | 13 | 6 | <1 | 14 h 50 min |
| August | 84°F | 61°F | 72.7°F | 3.39 | 13 | 3 | <1 | 13 h 50 min |
| September | 79°F | 53°F | 66.0°F | 2.83 | 12 | 2 | <1 | 12 h 30 min |
| October | 67°F | 42°F | 54.7°F | 2.77 | 12 | <1 | 5 | 11 h 10 min |
| November | 54°F | 33°F | 43.5°F | 2.69 | 10 | <1 | 17 | 10 h |
| December | 43°F | 27°F | 34.8°F | 2.84 | 12 | <1 | 24 | 9 h 20 min |
| Year (annual) | 64°F | 42°F | 53.2°F | 38.77 | 146 | 15 | 122 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 4°C | −6°C | −1.2°C | 68 mm |
| February | 6°C | −5°C | 0.4°C | 57 mm |
| March | 11°C | 0°C | 5.4°C | 86 mm |
| April | 19°C | 5°C | 11.7°C | 97 mm |
| May | 24°C | 11°C | 17.3°C | 104 mm |
| June | 28°C | 16°C | 21.9°C | 103 mm |
| July | 30°C | 17°C | 23.7°C | 101 mm |
| August | 29°C | 16°C | 22.6°C | 86 mm |
| September | 26°C | 12°C | 18.9°C | 72 mm |
| October | 19°C | 6°C | 12.6°C | 70 mm |
| November | 12°C | 1°C | 6.4°C | 68 mm |
| December | 6°C | −3°C | 1.6°C | 72 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Newark's own co-op station Newark Water Works does: 15 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00004858; 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 Newark?
Normal highs sit between 65°F and 85°F in April, May, June, August, September and October. Of those, October 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 USW00004858.
When is the last frost in Newark?
In Newark, the last spring frost (32°F) comes after April 22 in half of years and after May 10 in one year in ten; the first autumn frost comes before October 18 in half of years and before October 5 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 221 year in 10 after May 10; 9 in 10 after April 6
- First autumn frost, half of years before
- October 181 year in 10 before October 5; 9 in 10 before November 1
NOAA puts the median frost-free season at 178 days, and the season without a hard freeze (28°F) at 204 days.
A hard freeze (28°F) comes after April 8 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Newark in zone 6a in ZIP code 43055. By the map's own method, the average of each year's coldest night over 1991-2020, Newark's NOAA station is in zone 6a: the coldest night of a typical year reaches −8°F (21 complete years).
Frost dates for every NOAA station in Ohio · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00004858; 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 Newark?
In a normal year in Newark, 15 days a year reach 90°F, 122 nights fall to 32°F or colder and 146 days bring measurable precipitation.
- Days at 90°F or more
- 15a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 122a normal year
- Days that stay below freezing
- 30high of 32°F or less
- Days with 0.01 inch of precipitation
- 146a normal year
The highest temperature in this station's record (since 1999) is 100°F, on July 7, 2012; the lowest is −24°F, on January 17, 2009.
The wettest calendar year on that record is 2018, with 56.01 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00004858; records: ACIS (NOAA Regional Climate Centers), station USW00004858. Records use complete months only; a month missing more than three days is left out.
How sunny is Newark?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Newark, 3.9 kWh per square metre a day. August is the sunniest month (80%) and December the cloudiest (54%). Among the 459 U.S. places of 50,000 or more, that ranks tied 416th (with 11 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.6 |
| February | 60% | 2.4 |
| March | 62% | 3.4 |
| April | 68% | 4.7 |
| May | 72% | 5.5 |
| June | 76% | 6.1 |
| July | 79% | 6.1 |
| August | 80% | 5.5 |
| September | 77% | 4.4 |
| October | 69% | 3.0 |
| November | 65% | 2.0 |
| December | 54% | 1.4 |
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 Newark need?
A normal year in Newark brings 5,231 heating degree days, 3% fewer than the median U.S. place (5,373), and 961 cooling degree days, 6% more 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 3,470 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,088 | 0 |
| February | 906 | 0 |
| March | 722 | 1 |
| April | 368 | 9 |
| May | 136 | 78 |
| June | 15 | 212 |
| July | 1 | 302 |
| August | 4 | 241 |
| September | 70 | 102 |
| October | 337 | 16 |
| November | 647 | 0 |
| December | 936 | 0 |
| Year (annual) | 5,231 | 961 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00004858. 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 Newark been warmer than normal lately?
2022 averaged 53.7°F, 0.5°F above the 1991-2020 normal of 53.2°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 53.7°F | +0.5°F | 47.20 |
Source: observed years: ACIS, station USW00004858. A year counts only with all twelve months complete.
How does Newark's climate compare?
Newark is warmer than 79 of the other 98 places with their own NOAA record in Ohio, and wetter than 23. Across the 7,247 U.S. stations with normals, its annual mean of 53.2°F is warmer than 54%.
In the Köppen classification computed from these normals, Newark 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 Newark share this climate record?
16 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.
- Heath, OH10,822 people · 1 mi E
- Granville, OH6,308 people · 3 mi NW
- Beechwood Trails, OH2,765 people · 10 mi W
- Buckeye Lake, OH2,575 people · 6 mi S
- Hebron, OH2,406 people · 4 mi S
- Harbor Hills, OH1,639 people · 6 mi S
- Granville South, OH1,241 people · 5 mi NW
- Fairfield Beach, OH1,159 people · 7 mi S
- Thornport, OH1,157 people · 7 mi S
- Thornville, OH1,093 people · 9 mi S
- Millersport, OH993 people · 10 mi SW
- Alexandria, OH497 people · 9 mi NW
- Kirkersville, OH479 people · 9 mi SW
- Brownsville, OH333 people · 13 mi SE
- Jacksontown, OH259 people · 5 mi SE
- Gratiot, OH217 people · 14 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Newark's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Newark. This page uses Newark Heath Airport; the other differs by site and elevation, and the linked ones have pages of their own:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Newark Water Works USC00335747 | 5 mi NE | 835 ft | 50.6°F | 18°F | 84°F | 43.4 | 15 | April 29 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Newark's climate
What is the coldest month in Newark?
January, with a normal high of 39°F and a normal low of 21°F. The warmest is July (86°F by day, 63°F at night).
Does it snow in Newark?
Yes. NOAA publishes no 1991-2020 snowfall normal for Newark's NOAA station; Newark's own co-op station Newark Water Works records 15 inches of snow in a normal year.
What is the rainiest month in Newark?
May, with 4.08 in of precipitation in a normal year; the driest is February with 2.24 in.
What plant hardiness zone is Newark in?
The USDA's 2023 map puts Newark in zone 6a in ZIP code 43055. By the same method at Newark's NOAA station, the coldest night of a typical year reaches −8°F (21 years, 1991-2020): zone 6a.
How late can frost come in Newark?
In half of years the last 32°F night comes after April 22; in one year in ten it comes after May 10. Waiting until May 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Ohio climateThe statewide normals and every place in the state
- Newark Water Works, OH5 miles from this station, 50.6°F a year
- Lancaster, OH21 miles from this station, 52.2°F a year
- Centerburg, OH21 miles from this station, 50.0°F a year
- Columbus, OH22 miles from this station, 53.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made