Chattanooga weather in July: Chattanooga, Tennessee: normal highs, lows, rain and records for July
Chattanooga in July has a normal high of 91°F and a normal low of 71°F, a daily mean of 81°F, holding near 91°F all month. Measurable precipitation falls on 12 days in a normal July, 5.08 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 22°C, 129 mm of precipitation in July.
- 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 July?
The normal high is 91°F and the normal low 71°F, for a daily mean of 80.7°F. July is 3.3°F warmer than June and 0.7°F warmer than August. July is the warmest month of the year in Chattanooga and the 3rd wettest. Across the month the normal high rises 1°F, from 90°F on July 1 to 91°F on July 31. From one year to the next July's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Julys in three average between 79°F and 83°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 90°F | 70°F | 39% | 27% |
| July 8 | 90°F | 71°F | 39% | 26% |
| July 15 | 91°F | 71°F | 38% | 25% |
| July 22 | 91°F | 71°F | 36% | 24% |
| July 31 | 91°F | 71°F | 34% | 23% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 18, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 90°F | 70°F | 39% | 27% | 14 h 30 min |
| July 2 | 90°F | 70°F | 39% | 27% | 14 h 30 min |
| July 3 | 90°F | 70°F | 39% | 27% | 14 h 30 min |
| July 4 | 90°F | 70°F | 39% | 27% | 14 h 30 min |
| July 5 | 90°F | 71°F | 39% | 26% | 14 h 30 min |
| July 6 | 90°F | 71°F | 39% | 26% | 14 h 30 min |
| July 7 | 90°F | 71°F | 39% | 26% | 14 h 30 min |
| July 8 | 90°F | 71°F | 39% | 26% | 14 h 20 min |
| July 9 | 90°F | 71°F | 38% | 26% | 14 h 20 min |
| July 10 | 90°F | 71°F | 38% | 26% | 14 h 20 min |
| July 11 | 91°F | 71°F | 38% | 26% | 14 h 20 min |
| July 12 | 91°F | 71°F | 38% | 26% | 14 h 20 min |
| July 13 | 91°F | 71°F | 38% | 26% | 14 h 20 min |
| July 14 | 91°F | 71°F | 38% | 25% | 14 h 20 min |
| July 15 | 91°F | 71°F | 38% | 25% | 14 h 20 min |
| July 16 | 91°F | 71°F | 38% | 25% | 14 h 20 min |
| July 17 | 91°F | 71°F | 37% | 25% | 14 h 20 min |
| July 18 | 91°F | 71°F | 37% | 25% | 14 h 20 min |
| July 19 | 91°F | 71°F | 37% | 25% | 14 h 10 min |
| July 20 | 91°F | 71°F | 37% | 25% | 14 h 10 min |
| July 21 | 91°F | 71°F | 37% | 24% | 14 h 10 min |
| July 22 | 91°F | 71°F | 36% | 24% | 14 h 10 min |
| July 23 | 91°F | 71°F | 36% | 24% | 14 h 10 min |
| July 24 | 91°F | 71°F | 36% | 24% | 14 h 10 min |
| July 25 | 91°F | 71°F | 36% | 24% | 14 h 10 min |
| July 26 | 91°F | 71°F | 36% | 24% | 14 h |
| July 27 | 91°F | 71°F | 35% | 24% | 14 h |
| July 28 | 91°F | 71°F | 35% | 24% | 14 h |
| July 29 | 91°F | 71°F | 35% | 23% | 14 h |
| July 30 | 91°F | 71°F | 35% | 23% | 14 h |
| July 31 | 91°F | 71°F | 34% | 23% | 14 h |
- Normal high
- 91°FJuly average
- Normal low
- 71°FJuly average
- Precipitation
- 5.08 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 19
- Daylight
- 14 h 30 min to 14 hJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 78%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 July?
On a given July day the chance of 0.01 inch or more is 37% on average, highest around July 1 (39%). In all, 5.08 in falls on 12 days of a normal July, 1 of them with an inch or more.
In a normal July in Chattanooga, 19 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013882.
How humid and windy is Chattanooga in July?
At 3 p.m. the normal temperature is 88°F with 51% relative humidity and a dew point of 67°F; at 6 a.m. it is 72°F with 90% humidity. The wind averages 3.9 mph, most often from the west in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 72°F | 69°F | 90% | 1.7 mph | 43% |
| 9 a.m. | 78°F | 69°F | 74% | 3.8 mph | 42% |
| noon | 85°F | 69°F | 58% | 5.3 mph | – |
| 3 p.m. | 88°F | 67°F | 51% | 7.0 mph | – |
| 6 p.m. | 86°F | 68°F | 54% | 6.5 mph | – |
| 9 p.m. | 79°F | 69°F | 72% | 3.2 mph | 46% |
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 July in Chattanooga?
The warmest July temperature on Chattanooga's official record (since 1879) is 107°F, on July 1, 2012; the coldest is 51°F, on July 15, 1967. The wettest July brought 13.49 in (1916).
The July mean against the 1991-2020 normal of 80.7°F: 2021 80.2°F (−0.5), 2022 83.1°F (+2.4), 2023 81.3°F (+0.6), 2024 83.2°F (+2.5), 2025 83.2°F (+2.5), 2026 82.7°F (+2.0). 5 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 80.2°F | −0.5°F | 4.71 in |
| 2022 | 83.1°F | +2.4°F | 5.85 in |
| 2023 | 81.3°F | +0.6°F | 3.76 in |
| 2024 | 83.2°F | +2.5°F | 3.68 in |
| 2025 | 83.2°F | +2.5°F | 2.64 in |
| 2026 | 82.7°F | +2.0°F | 5.18 in |
Source: records: ACIS, NWS threaded record CHAthr; recent months: ACIS, station USW00013882. Records and recent months use complete months only.
How does July in Chattanooga compare across Tennessee?
Across the 116 places PlainClimate covers in Tennessee, July normal highs run from 80°F in Roan Mountain to 92°F in Memphis; Chattanooga's is 91°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.