Chattanooga, TN weather in October
Expect mild weather with some rain in Chattanooga in October, with highs near 74°F and lows near 51°F. Rain falls on about 8 days. Good for outdoor plans.
- Normal high
- 74°F
- Normal low
- 51°F
- Wet days
- 8
- 3.6 in total
- Muggy days
- 2
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 80°F | 68°F |
| Normal low | 58°F | 45°F |
| Chance of a wet day | 26% | 28% |
| Sunrise / sunset | 7:36 am / 7:25 pm | 8:01 am / 6:48 pm |
| Daylight | 11.8 h | 10.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical October day
- 6 am54°Fdew point 50°F
- 9 am59°Fdew point 52°F
- Noon68°Fdew point 51°F
- 3 pm72°Fdew point 50°F
- 6 pm69°Fdew point 51°F
- 9 pm60°Fdew point 53°F
NOAA hourly normals (local standard time) from Chattanooga Lovell Airport (6 mi away); average wind 4 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more2 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in5 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain in October
Normal precipitation is 3.6 in; a dry October brings about 1.5 in and a wet one about 5.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How October varies from year to year
- Warmest October, 1991-20202016: average high 82°F
- Coolest October2009: average high 68°F
- Wettest October2019: 7.5 in
- Driest October2016: 0.08 in
- Highest reading100°F (October 3, 2019)
- Lowest reading30°F (October 30, 2017)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 84°F | 74°F | 62°F |
| Normal low | 64°F | 51°F | 40°F |
| Wet days | 8 | 8 | 9 |
| Comfortable days | 5 | 16 | 11 |
| Daylight | 12.4 h | 11.3 h | 10.3 h |
Highs change by -10°F from September and -12°F into November.
Nearby alternatives in October
- Warmer: Montgomery, AL194 mi · high 80°F · 6 wet days
- Cooler: Gatlinburg, TN111 mi · high 69°F · 10 wet days
How Chattanooga ranks in October
- Normal high162nd warmest of 378 cities; 2nd of 7 in Tennessee
- Wet days207th driest of 378
- Comfortable days41st most of 340
Heating and cooling
October has 135 heating degree days and 65 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Chattanooga in October?
The normal high is 74°F and the normal low is 51°F. From 1991 to 2020 the hottest October reading was 100°F (most recently on October 3, 2019).
Does it rain a lot in Chattanooga in October?
About 8 days in October have at least 0.01 in of precipitation, and the normal total is 3.6 in. The wettest October in 1991-2020 was in 2019 (7.5 in); the driest was in 2016 (0.08 in).
Is October a good time to visit Chattanooga?
October ranks 2nd of 12 months on our comfort score for Chattanooga (68 out of 100). It has about 16 comfortable days. The best months are April and October.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Chattanooga Lovell Airport (USW00013882), 6.2 mi E of the city center, 671 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Lovell Field Airport (723240-13882), 6.3 mi E of the city center, 669 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).