Chattanooga, Oklahoma climate: Normal weather by month, frost dates and records
Chattanooga's normal year runs from 26°F January nights to 97°F July afternoons, with 30.1 inches of precipitation and less than an inch of snow (0.8 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.3°C, January lows of −4°C, July highs of 36°C, 764 mm of precipitation a year.
- NOAA stationChattanooga
- Station IDUSC00341706
- Location34.42°N 98.65°W
- Elevation1,148 ft (350 m)
- From the centerunder 1 mile
- Population408
On October 23, the normal high in Chattanooga is 74°F and the normal low 46°F, and the chance of measurable rain or snow is 17%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Chattanooga.
- Jan 52° 26°
- Feb 56° 29°
- Mar 65° 38°
- Apr 74° 46°
- May 83° 57°
- Jun 92° 67°
- Jul 97° 71°
- Aug 96° 70°
- Sep 88° 62°
- Oct 77° 49°
- Nov 64° 37°
- Dec 53° 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 Chattanooga each month?
July is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 26°F. The most precipitation falls in May (4.51 in), the least in January (1.23 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 52°F | 26°F | 38.9°F | 1.23 | 4 | <1 | 24 | 10 h 10 min |
| February | 56°F | 29°F | 42.5°F | 1.32 | 4 | <1 | 17 | 11 h |
| March | 65°F | 38°F | 51.4°F | 2.40 | 5 | <1 | 9 | 11 h 50 min |
| April | 74°F | 46°F | 59.8°F | 2.42 | 5 | 1 | 2 | 13 h |
| May | 83°F | 57°F | 69.8°F | 4.51 | 7 | 8 | <1 | 14 h |
| June | 92°F | 67°F | 79.5°F | 3.82 | 7 | 20 | <1 | 14 h 30 min |
| July | 97°F | 71°F | 84.0°F | 2.40 | 5 | 28 | <1 | 14 h 20 min |
| August | 96°F | 70°F | 82.9°F | 2.93 | 5 | 26 | <1 | 13 h 30 min |
| September | 88°F | 62°F | 74.7°F | 2.86 | 5 | 13 | <1 | 12 h 30 min |
| October | 77°F | 49°F | 62.7°F | 2.94 | 5 | 4 | 1 | 11 h 20 min |
| November | 64°F | 37°F | 50.3°F | 1.56 | 4 | <1 | 9 | 10 h 20 min |
| December | 53°F | 28°F | 40.8°F | 1.67 | 4 | <1 | 22 | 9 h 50 min |
| Year (annual) | 75°F | 48°F | 61.4°F | 30.06 | 59 | 101 | 84 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 11°C | −4°C | 3.8°C | 31 mm |
| February | 13°C | −2°C | 5.8°C | 34 mm |
| March | 18°C | 3°C | 10.8°C | 61 mm |
| April | 23°C | 8°C | 15.4°C | 61 mm |
| May | 28°C | 14°C | 21.0°C | 115 mm |
| June | 33°C | 19°C | 26.4°C | 97 mm |
| July | 36°C | 22°C | 28.9°C | 61 mm |
| August | 36°C | 21°C | 28.3°C | 74 mm |
| September | 31°C | 16°C | 23.7°C | 73 mm |
| October | 25°C | 9°C | 17.1°C | 75 mm |
| November | 18°C | 3°C | 10.2°C | 40 mm |
| December | 12°C | −2°C | 4.9°C | 42 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00341706; 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 Chattanooga?
Normal highs sit between 65°F and 85°F in March, April, May and October. Of those, April has the fewest days with rain (5).
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 USC00341706.
When is the last frost in Chattanooga?
In Chattanooga, the last spring frost (32°F) comes after April 7 in half of years and after April 24 in one year in ten; the first autumn frost comes before November 2 in half of years and before October 17 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 71 year in 10 after April 24; 9 in 10 after March 21
- First autumn frost, half of years before
- November 21 year in 10 before October 17; 9 in 10 before November 16
NOAA puts the median frost-free season at 205 days, and the season without a hard freeze (28°F) at 229 days.
A hard freeze (28°F) comes after March 26 in half of springs and before November 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Chattanooga in zone 8a in ZIP code 73528, the nearest ZIP area.
Frost dates for every NOAA station in Oklahoma · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00341706; 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 Chattanooga?
In a normal year in Chattanooga, 101 days a year reach 90°F (32 of them 100°F or more), 84 nights fall to 32°F or colder and 59 days bring measurable precipitation.
- Days at 90°F or more
- 101a normal year
- Days at 100°F or more
- 32a normal year
- Nights at 32°F or colder
- 84a normal year
- Days that stay below freezing
- 5high of 32°F or less
- Days with 0.01 inch of precipitation
- 59a normal year
The highest temperature in this station's record (since 1905) is 116°F, on June 28, 1994; the lowest is −13°F, on December 23, 1989.
The wettest calendar year on that record is 2007, with 48.70 in; the snowiest season is 1987–88, with 13.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00341706; records: ACIS (NOAA Regional Climate Centers), station USC00341706. Records use complete months only; a month missing more than three days is left out.
How sunny is Chattanooga?
Over a year 82% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Chattanooga, 4.9 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (74%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 3.0 |
| February | 74% | 3.6 |
| March | 77% | 4.8 |
| April | 79% | 5.9 |
| May | 79% | 6.3 |
| June | 86% | 7.1 |
| July | 88% | 7.0 |
| August | 88% | 6.4 |
| September | 84% | 5.3 |
| October | 82% | 4.1 |
| November | 81% | 3.2 |
| December | 76% | 2.6 |
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 Chattanooga need?
A normal year in Chattanooga brings 3,448 heating degree days, 36% fewer than the median U.S. place (5,373), and 2,189 cooling degree days, 2.4 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,356 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 811 | 0 |
| February | 629 | 0 |
| March | 428 | 7 |
| April | 189 | 33 |
| May | 37 | 186 |
| June | 1 | 435 |
| July | 0 | 589 |
| August | 0 | 555 |
| September | 14 | 305 |
| October | 144 | 74 |
| November | 446 | 5 |
| December | 750 | 0 |
| Year (annual) | 3,448 | 2,189 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00341706. 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 Chattanooga's climate compare?
Chattanooga is warmer than 96 of the other 133 places with their own NOAA record in Oklahoma, and wetter than 24. Across the 7,247 U.S. stations with normals, its annual mean of 61.4°F is warmer than 78%.
In the Köppen classification computed from these normals, Chattanooga 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 Chattanooga share this climate record?
Faxon has no NOAA station with 1991-2020 normals of its 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.
- Faxon, OK112 people · 5 mi NE
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 Chattanooga's climate
What is the coldest month in Chattanooga?
January, with a normal high of 52°F and a normal low of 26°F. The warmest is July (97°F by day, 71°F at night).
Does it snow in Chattanooga?
Rarely: NOAA's normal is 0.8 inch a year.
What is the rainiest month in Chattanooga?
May, with 4.51 in of precipitation in a normal year; the driest is January with 1.23 in.
What plant hardiness zone is Chattanooga in?
The USDA's 2023 map puts Chattanooga in zone 8a in ZIP code 73528, the nearest ZIP area.
How late can frost come in Chattanooga?
In half of years the last 32°F night comes after April 7; in one year in ten it comes after April 24. Waiting until April 24 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oklahoma climateThe statewide normals and every place in the state
- Grandfield, OK14 miles from this station, 63.1°F a year
- Lawton, OK16 miles from this station, 62.6°F a year
- Walters, OK17 miles from this station, 62.7°F a year
- Altus Air Force Base, OK19 miles from this station, 63.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made