Chattanooga weather in October: Chattanooga, Tennessee: normal highs, lows, rain and records for October
Chattanooga in October has a normal high of 74°F and a normal low of 51°F, a daily mean of 63°F, falling from 80°F on the 1st to 68°F by the 31st. Measurable precipitation falls on 8 days in a normal October, 3.59 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 11°C, 91 mm of precipitation in October.
- NOAA stationChattanooga Airport
- Station IDUSW00013882
- Location35.03°N 85.20°W
- Elevation671 ft (205 m)
- From the center4 miles
- Population191,496
- Jan 51° 32°
- Feb 56° 36°
- Mar 64° 42°
- Apr 74° 50°
- May 81° 59°
- Jun 88° 67°
- Jul 91° 71°
- Aug 90° 70°
- Sep 84° 64°
- Oct 74° 51°
- Nov 62° 40°
- Dec 53° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Chattanooga in October?
The normal high is 74°F and the normal low 51°F, for a daily mean of 62.7°F. October is 11.2°F cooler than September and 11.5°F warmer than November. October is the 6th warmest month of the year in Chattanooga and the 12th wettest. Across the month the normal high falls 12°F, from 80°F on October 1 to 68°F on October 31. From one year to the next October's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 60°F and 65°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 80°F | 58°F | 26% | 17% |
| October 8 | 77°F | 55°F | 26% | 17% |
| October 15 | 75°F | 52°F | 27% | 17% |
| October 22 | 72°F | 49°F | 27% | 17% |
| October 31 | 68°F | 45°F | 28% | 18% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 80°F | 58°F | 26% | 17% | 11 h 50 min |
| October 2 | 79°F | 58°F | 26% | 17% | 11 h 50 min |
| October 3 | 79°F | 57°F | 26% | 17% | 11 h 50 min |
| October 4 | 79°F | 57°F | 26% | 17% | 11 h 50 min |
| October 5 | 78°F | 56°F | 26% | 17% | 11 h 40 min |
| October 6 | 78°F | 56°F | 26% | 17% | 11 h 40 min |
| October 7 | 78°F | 55°F | 26% | 17% | 11 h 40 min |
| October 8 | 77°F | 55°F | 26% | 17% | 11 h 40 min |
| October 9 | 77°F | 55°F | 26% | 17% | 11 h 30 min |
| October 10 | 77°F | 54°F | 26% | 17% | 11 h 30 min |
| October 11 | 76°F | 54°F | 26% | 17% | 11 h 30 min |
| October 12 | 76°F | 53°F | 26% | 17% | 11 h 30 min |
| October 13 | 75°F | 53°F | 26% | 17% | 11 h 30 min |
| October 14 | 75°F | 52°F | 27% | 17% | 11 h 20 min |
| October 15 | 75°F | 52°F | 27% | 17% | 11 h 20 min |
| October 16 | 74°F | 51°F | 27% | 16% | 11 h 20 min |
| October 17 | 74°F | 51°F | 27% | 16% | 11 h 20 min |
| October 18 | 73°F | 51°F | 27% | 17% | 11 h 20 min |
| October 19 | 73°F | 50°F | 27% | 17% | 11 h 10 min |
| October 20 | 73°F | 50°F | 27% | 17% | 11 h 10 min |
| October 21 | 72°F | 49°F | 27% | 17% | 11 h 10 min |
| October 22 | 72°F | 49°F | 27% | 17% | 11 h 10 min |
| October 23 | 71°F | 48°F | 27% | 17% | 11 h |
| October 24 | 71°F | 48°F | 27% | 17% | 11 h |
| October 25 | 71°F | 47°F | 27% | 17% | 11 h |
| October 26 | 70°F | 47°F | 27% | 17% | 11 h |
| October 27 | 70°F | 47°F | 28% | 17% | 11 h |
| October 28 | 69°F | 46°F | 28% | 17% | 10 h 50 min |
| October 29 | 69°F | 46°F | 28% | 18% | 10 h 50 min |
| October 30 | 69°F | 45°F | 28% | 18% | 10 h 50 min |
| October 31 | 68°F | 45°F | 28% | 18% | 10 h 50 min |
- Normal high
- 74°FOctober average
- Normal low
- 51°FOctober average
- Precipitation
- 3.59 inmonth total
- Days with precipitation
- 80.01 inch or more
- Daylight
- 11 h 50 min to 10 h 50 minOctober 1 to October 31
- Days at 70°F or more
- 22
- Days at 80°F or more
- 9
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013882; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Chattanooga in October?
On a given October day the chance of 0.01 inch or more is 27% on average, highest around October 31 (28%). In all, 3.59 in falls on 8 days of a normal October, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013882.
How humid and windy is Chattanooga in October?
At 3 p.m. the normal temperature is 66°F with 46% relative humidity and a dew point of 45°F; at 6 a.m. it is 49°F with 87% humidity. The wind averages 4.2 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 49°F | 45°F | 87% | 2.7 mph | 50% |
| 9 a.m. | 53°F | 46°F | 79% | 3.9 mph | – |
| noon | 62°F | 46°F | 55% | 6.1 mph | 44% |
| 3 p.m. | 66°F | 45°F | 46% | 7.0 mph | 44% |
| 6 p.m. | 62°F | 46°F | 54% | 4.8 mph | 49% |
| 9 p.m. | 55°F | 47°F | 75% | 2.9 mph | 59% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013882. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in Chattanooga?
The warmest October temperature on Chattanooga's official record (since 1879) is 100°F, on October 3, 2019; the coldest is 22°F, on October 30, 1952. The wettest October brought 11.91 in (1925).
The October mean against the 1991-2020 normal of 62.7°F: 2021 65.7°F (+3.0), 2022 59.6°F (−3.1), 2023 64.1°F (+1.4), 2024 65.8°F (+3.1), 2025 63.9°F (+1.2). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 65.7°F | +3.0°F | 4.72 in |
| 2022 | 59.6°F | −3.1°F | 1.63 in |
| 2023 | 64.1°F | +1.4°F | 0.29 in |
| 2024 | 65.8°F | +3.1°F | 0.15 in |
| 2025 | 63.9°F | +1.2°F | 3.30 in |
Source: records: ACIS, NWS threaded record CHAthr; recent months: ACIS, station USW00013882. Records and recent months use complete months only.
How does October in Chattanooga compare across Tennessee?
Across the 116 places PlainClimate covers in Tennessee, October normal highs run from 67°F in Roan Mountain to 76°F in Ardmore; Chattanooga's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Chattanooga in September84°F by day, 64°F at night
- Chattanooga in November62°F by day, 40°F at night
- Chattanooga through the yearEvery month, frost dates, records and recent years
- Tennessee in OctoberThe statewide normal and the warmest and coolest places
- Ardmore: Tennessee's warmest Octobernormal high 76°F