Newcomb, Tennessee climate: Climate normals at a NOAA weather station
Newcomb's normal year runs from 26°F January nights to 86°F July afternoons, with 54.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.3°C, January lows of −4°C, July highs of 30°C, 1,386 mm of precipitation a year.
- NOAA stationNewcomb
- Station IDUSC00406493
- Location36.55°N 84.17°W
- Elevation1,014 ft (309 m)
On October 23, the normal high in Newcomb is 67°F and the normal low 40°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Newcomb.
- Jan 46° 26°
- Feb 50° 28°
- Mar 59° 34°
- Apr 69° 42°
- May 77° 52°
- Jun 83° 60°
- Jul 86° 64°
- Aug 85° 63°
- Sep 80° 57°
- Oct 70° 44°
- Nov 58° 33°
- Dec 49° 29°
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 Newcomb each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 26°F. The most precipitation falls in July (5.75 in), the least in October (2.77 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 46°F | 26°F | 35.6°F | 4.61 | 12 | <1 | 23 | 10 h |
| February | 50°F | 28°F | 39.1°F | 5.00 | 11 | <1 | 20 | 10 h 50 min |
| March | 59°F | 34°F | 46.4°F | 5.17 | 11 | <1 | 15 | 11 h 50 min |
| April | 69°F | 42°F | 55.4°F | 5.14 | 11 | <1 | 6 | 13 h 10 min |
| May | 77°F | 52°F | 64.5°F | 4.78 | 12 | 1 | 1 | 14 h 10 min |
| June | 83°F | 60°F | 71.8°F | 4.96 | 12 | 5 | <1 | 14 h 40 min |
| July | 86°F | 64°F | 75.3°F | 5.75 | 13 | 8 | <1 | 14 h 30 min |
| August | 85°F | 63°F | 74.2°F | 3.84 | 9 | 7 | <1 | 13 h 40 min |
| September | 80°F | 57°F | 68.2°F | 3.64 | 8 | 3 | <1 | 12 h 30 min |
| October | 70°F | 44°F | 56.6°F | 2.77 | 8 | <1 | 4 | 11 h 20 min |
| November | 58°F | 33°F | 45.6°F | 3.78 | 9 | <1 | 17 | 10 h 20 min |
| December | 49°F | 29°F | 39.0°F | 5.12 | 12 | <1 | 21 | 9 h 40 min |
| Year (annual) | 68°F | 44°F | 56.0°F | 54.56 | 128 | 25 | 107 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 8°C | −4°C | 2.0°C | 117 mm |
| February | 10°C | −2°C | 3.9°C | 127 mm |
| March | 15°C | 1°C | 8.0°C | 131 mm |
| April | 21°C | 5°C | 13.0°C | 131 mm |
| May | 25°C | 11°C | 18.1°C | 121 mm |
| June | 29°C | 16°C | 22.1°C | 126 mm |
| July | 30°C | 18°C | 24.1°C | 146 mm |
| August | 30°C | 17°C | 23.4°C | 98 mm |
| September | 27°C | 14°C | 20.1°C | 92 mm |
| October | 21°C | 7°C | 13.7°C | 70 mm |
| November | 15°C | 1°C | 7.6°C | 96 mm |
| December | 10°C | −2°C | 3.9°C | 130 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Williamsburg (13 miles away), gets 11 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00406493; 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 Newcomb?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (8).
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 USC00406493.
When is the last frost at Newcomb?
In Newcomb, the last spring frost (32°F) comes after April 18 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 24 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 181 year in 10 after May 3; 9 in 10 after April 3
- First autumn frost, half of years before
- October 241 year in 10 before October 11; 9 in 10 before November 4
NOAA puts the median frost-free season at 187 days, and the season without a hard freeze (28°F) at 211 days.
A hard freeze (28°F) comes after April 3 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Newcomb in zone 7a in ZIP code 37819, 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 7b: the coldest night of a typical year reaches 5°F (21 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Tennessee · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00406493; 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 Newcomb?
In a normal year in Newcomb, 25 days a year reach 90°F, 107 nights fall to 32°F or colder and 128 days bring measurable precipitation.
- Days at 90°F or more
- 25a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 107a normal year
- Days that stay below freezing
- 8high of 32°F or less
- Days with 0.01 inch of precipitation
- 128a normal year
The highest temperature in this station's record (since 1999) is 106°F, on June 30, 2012; the lowest is −8°F, on February 21, 2015.
The wettest calendar year on that record is 2019, with 73.44 in; the snowiest season is 2021–22, with 23.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00406493; records: ACIS (NOAA Regional Climate Centers), station USC00406493. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Newcomb?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Newcomb, 4.2 kWh per square metre a day. August is the sunniest month (79%) and February the cloudiest (61%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 2.2 |
| February | 61% | 2.8 |
| March | 66% | 3.9 |
| April | 72% | 5.2 |
| May | 73% | 5.7 |
| June | 78% | 6.2 |
| July | 76% | 5.9 |
| August | 79% | 5.5 |
| September | 77% | 4.7 |
| October | 74% | 3.6 |
| November | 73% | 2.6 |
| December | 63% | 1.9 |
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 Newcomb record?
A normal year at Newcomb brings 4,334 heating degree days, 19% fewer than the median U.S. place (5,373), and 1,074 cooling degree days, 18% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,831 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 913 | 0 |
| February | 726 | 1 |
| March | 578 | 2 |
| April | 301 | 15 |
| May | 98 | 82 |
| June | 8 | 212 |
| July | 0 | 320 |
| August | 1 | 286 |
| September | 41 | 138 |
| October | 278 | 19 |
| November | 582 | 0 |
| December | 808 | 0 |
| Year (annual) | 4,334 | 1,074 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00406493. 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 Newcomb been warmer than normal?
2025 averaged 56.5°F, 0.5°F above the 1991-2020 normal of 56.0°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.5°F | +0.5°F | 65.68 |
| 2022 | 55.3°F | −0.7°F | 62.23 |
| 2023 | 57.0°F | +1.0°F | 46.63 |
| 2024 | 57.5°F | +1.5°F | 56.17 |
| 2025 | 56.5°F | +0.5°F | 60.39 |
Source: observed years: ACIS, station USC00406493. A year counts only with all twelve months complete.
How does Newcomb's climate compare?
Newcomb is warmer than 15 of the 116 places with their own NOAA record in Tennessee, and wetter than 36. Across the 7,247 U.S. stations with normals, its annual mean of 56.0°F is warmer than 64%.
In the Köppen classification computed from these normals, Newcomb is Cfa: temperate, 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 Newcomb 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.
- Fincastle, TN1,328 people · 12 mi SE
- Emlyn, KY527 people · 10 mi N
- Pleasant View, KY281 people · 9 mi N
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 Newcomb's climate
What is the coldest month at Newcomb?
January, with a normal high of 46°F and a normal low of 26°F. The warmest is July (86°F by day, 64°F at night).
Does it snow at Newcomb?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Williamsburg (13 miles away), records 11 inches of snow in a normal year.
What is the rainiest month at Newcomb?
July, with 5.75 in of precipitation in a normal year; the driest is October with 2.77 in.
What plant hardiness zone is Newcomb in?
The USDA's 2023 map puts Newcomb in zone 7a in ZIP code 37819, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 5°F (21 years, 1991-2020): zone 7b.
How late can frost come at Newcomb?
In half of years the last 32°F night comes after April 18; 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
- Tennessee climateThe statewide normals and every place in the state
- Williamsburg, KY12 miles from this station, 55.6°F a year
- Stearns, KY19 miles from this station, 54.9°F a year
- Oneida, TN20 miles from this station, 55.1°F a year
- Norris, TN24 miles from this station, 55.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made