Jackson Mckellar, TN Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Jackson Mckellar's primary NOAA station, JACKSON MCKELLAR AP.
The climate verdict for Jackson Mckellar
Water is the standout signal in Jackson Mckellar, Tennessee: 53.9 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 60°F. It scores 80/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 76% of them.
- 60°F
- yearly average temperature, NOAA normal
- 80/100
- comfort score, above 76% of station-mapped location scores
- 53.9"
- yearly precipitation total
- 207 days
- frost-free growing season
Jackson Mckellar: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00003811 · Jackson Mckellar, TN 60°F mean · 53.9" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 60°F
- RANK-UPPER #5,146
- PHOTO-FINISH ≈ Alum Fork
- PRCP-WET 53.9"
- SWING-MID 41°F
- COMF-TOP 80/100
- LOAD-HEAT 3,522 HDD
- STN-1 USW00003811
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Alum Fork, AR ( -0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every TN station list.
- Jackson Mckellar (this station) 60°F
- Cold Greers Ferry Dam, AR 60°F
- Hot Waldron, AR 60°F
- Near Alum Fork, AR 60°F
- Near McLean, TX 60°F
Climate Living Index · Jackson Mckellar
Jackson Mckellar: 59/100 · grade C
Jackson Mckellar publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 1 missing weight rescale to 100.
PlainClimate-derived for Jackson Mckellar, not an official NOAA rating. Rankings still use Comfort Score 80/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 92 calendar days | 78/100 · B |
| Annual temperature balance | 60.0°F · 7.5° from 67.5°F | 76/100 · B |
| Frost-free season | 207 days/year | 69/100 · C |
| Precipitation balance | 53.9 in · 18.9 from 35 in | 32/100 · F |
| Summer moisture balance | 68.6°F mean dew point | 19/100 · F |
Jackson Mckellar · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Jackson Mckellar is a temperate Köppen climate: Cfa
Coldest-month mean 39.0°F and warmest-month mean 79.5°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 79.5°F
- Coldest month
- 39.0°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Jackson Mckellar sits across the climate record
Three NOAA fields for Jackson Mckellar's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 25% warmest
- Among 6,861 stations, Jackson Mckellar sits in the warmer third of annual means.
- Annual precipitation
- Top 12% wettest
- Jackson Mckellar's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 38th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Jackson Mckellar compares across U.S. station-mapped locations
Jackson Mckellar's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
80 Top 24% score exceeds 76% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Jackson Mckellar's measured station temperature trend
MethodologyAcross 73 complete annual observations from 1949 to 2025, JACKSON MCKELLAR AP warmed at a fitted rate of 0.12°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Jackson Mckellar primary station fitted change +0.12 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 49°F (9°C) | 29°F (-1°C) | 39°F (4°C) | 4.1" | 19.4 | 0.0 |
| February | 53°F (12°C) | 33°F (0°C) | 43°F (6°C) | 4.4" | 15.3 | 0.0 |
| March | 62°F (17°C) | 40°F (4°C) | 51°F (11°C) | 5.5" | 8.7 | 0.0 |
| April | 72°F (22°C) | 48°F (9°C) | 60°F (16°C) | 5.1" | 1.5 | 0.0 |
| May | 80°F (27°C) | 58°F (14°C) | 69°F (21°C) | 5.6" | 0.0 | 2.0 |
| June | 87°F (31°C) | 66°F (19°C) | 76°F (25°C) | 4.8" | 0.0 | 12.4 |
| July | 90°F (32°C) | 69°F (21°C) | 80°F (26°C) | 4.4" | 0.0 | 18.9 |
| August | 90°F (32°C) | 67°F (19°C) | 78°F (26°C) | 3.5" | 0.0 | 16.5 |
| September | 84°F (29°C) | 60°F (15°C) | 72°F (22°C) | 3.6" | 0.0 | 7.3 |
| October | 73°F (23°C) | 48°F (9°C) | 61°F (16°C) | 3.6" | 1.7 | 0.4 |
| November | 61°F (16°C) | 38°F (3°C) | 49°F (10°C) | 4.3" | 10.7 | 0.0 |
| December | 51°F (11°C) | 32°F (0°C) | 42°F (5°C) | 5.0" | 17.0 | 0.0 |
The year, day by day
Jackson Mckellar works both ends of the calendar. Normal highs climb to 90°F by July 20 and hold at or above 90°F on 33 dates, then normal lows drop to freezing or below on 59 dates, bottoming at 29°F around January 16.
When the heat sits
Normal highs reach 90°F from July 11 through August 12, covering 33 dates. The broader mild season, normal highs of 70°F or more, runs April 8 to October 24.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into February 13, then returns to freezing around December 17, covering 59 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is March 18, when 37% of years recorded at least a hundredth of an inch. The driest is September 4 at 23%. Summed across the calendar, that is about 116 wet dates a year.
The widest day
October 14 carries the biggest normal gap between afternoon and dawn, 25°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Jackson Mckellar.
Where Jackson Mckellar Stands Nationally
The normal water year runs well above the national norm at roughly 54 inches.
Jackson Mckellar earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
10.1 days with precipitation
10.1 days with precipitation
11.7 days with precipitation
10.5 days with precipitation
11.1 days with precipitation
9.7 days with precipitation
9.3 days with precipitation
7.7 days with precipitation
7.1 days with precipitation
8.4 days with precipitation
9.4 days with precipitation
11.0 days with precipitation
Jackson Mckellar spreads its precipitation across the year
Neither half of the year dominates here: June through August take 23% of the annual total and December through February 25%, with neither reaching the 35% that would mark a distinct wet season. Jackson Mckellar has no dry season to plan around, though it does carry a 40.5°F seasonal spread.
The gap between the wettest and driest month still matters: May averages 5.6" and August 3.5". The three wettest months together take 30% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Jackson Mckellar, it arrives in quantity
53.9" of precipitation falls across only about 116 wet days here, averaging 0.46 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 116 a year, 32% of all days
- Average depth per wet day
- 0.46 inches
- Most wet days
- March, about 12
- Fewest wet days
- September, about 7
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
October 29
50% probability date
Last Spring Freeze
April 5
50% probability date
Growing Season
207 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,522
Higher = more heating needed
Cooling Degree Days
1,717
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 67% | 8.1 | 49% | 36% |
| February | 65% | 8.5 | 48% | 35% |
| March | 64% | 8.4 | 51% | 28% |
| April | 69% | 7.4 | 50% | 22% |
| May | 73% | 5.9 | 53% | 17% |
| June | 74% | 5.3 | 60% | 9% |
| July | 76% | 4.4 | 62% | 9% |
| August | 75% | 4.4 | 63% | 10% |
| September | 72% | 5.3 | 69% | 13% |
| October | 72% | 6.2 | 58% | 26% |
| November | 70% | 7.3 | 55% | 31% |
| December | 72% | 7.8 | 49% | 39% |
Nationwide similar cities
Other rankable U.S. places outside TN closest to Jackson Mckellar on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (60°F here).
- Ashland, MS 60°F · 0.0°F off
- Bixby, OK 60°F · 0.0°F off
- Booneville, MS 60°F · 0.0°F off
- Chatsworth, GA 60°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (53.9" here), excluding temperature-peer places.
- Arcadia, FL 53.9" · 0.0" off
- Russellville, KY 53.9" · 0.0" off
- Scottsville, KY 54.0" · 0.0" off
- Winslow, AR 53.9" · 0.0" off
Data-derived climate profile
How Jackson Mckellar's climate pattern fits together
heating led · wet · mid swing
Jackson Mckellar's energy balance leans toward cold weather: 3,522 annual heating degree days against 1,717 for cooling. Its 40.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
Jackson Mckellar's frost-free season lasts about 207 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Jackson Mckellar's middle-range seasonal profile. The measured spread is 40.5°F. The annual average is 60°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Jackson Mckellar carries 53.9 inches of precipitation in a normal year, inside PlainClimate's wet range. Snowfall is not added to the interpretation because its annual value is missing. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Jackson Mckellar's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Jackson Mckellar, not an official NOAA class or a year-ahead forecast.
Questions about Jackson Mckellar's climate
How much rain does Jackson Mckellar get? ▼
How many days above 90°F does Jackson Mckellar get? ▼
How much energy does heating and cooling require in Jackson Mckellar? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Jackson Mckellar's primary station: JACKSON MCKELLAR AP (USW00003811). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Jackson Mckellar; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Jackson Mckellar comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.