Knoxville weather in July: Knoxville, Tennessee: normal highs, lows, rain and records for July
Knoxville in July has a normal high of 88°F and a normal low of 69°F, a daily mean of 79°F, holding near 88°F all month. Measurable precipitation falls on 12 days in a normal July, 5.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 20°C, 133 mm of precipitation in July.
- NOAA stationKnoxville Airport
- Station IDUSW00013891
- Location35.82°N 83.99°W
- Elevation962 ft (293 m)
- From the center11 miles
- Population198,722
- Jan 48° 30°
- Feb 53° 33°
- Mar 61° 40°
- Apr 71° 48°
- May 79° 57°
- Jun 86° 65°
- Jul 88° 69°
- Aug 88° 68°
- Sep 83° 61°
- Oct 72° 49°
- Nov 60° 38°
- Dec 51° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Knoxville in July?
The normal high is 88°F and the normal low 69°F, for a daily mean of 78.5°F. July is 3.2°F warmer than June and 0.9°F warmer than August. July is the warmest month of the year in Knoxville and the wettest. 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 77°F and 81°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 | 88°F | 68°F | 39% | 26% |
| July 8 | 88°F | 69°F | 38% | 27% |
| July 15 | 89°F | 69°F | 37% | 26% |
| July 22 | 88°F | 69°F | 37% | 25% |
| July 31 | 88°F | 69°F | 36% | 24% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 9, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 88°F | 68°F | 39% | 26% | 14 h 30 min |
| July 2 | 88°F | 68°F | 38% | 26% | 14 h 30 min |
| July 3 | 88°F | 68°F | 38% | 26% | 14 h 30 min |
| July 4 | 88°F | 68°F | 38% | 27% | 14 h 30 min |
| July 5 | 88°F | 68°F | 38% | 27% | 14 h 30 min |
| July 6 | 88°F | 68°F | 38% | 27% | 14 h 30 min |
| July 7 | 88°F | 69°F | 38% | 27% | 14 h 30 min |
| July 8 | 88°F | 69°F | 38% | 27% | 14 h 30 min |
| July 9 | 89°F | 69°F | 38% | 27% | 14 h 30 min |
| July 10 | 89°F | 69°F | 38% | 26% | 14 h 30 min |
| July 11 | 89°F | 69°F | 38% | 26% | 14 h 30 min |
| July 12 | 89°F | 69°F | 37% | 26% | 14 h 30 min |
| July 13 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 14 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 15 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 16 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 17 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 18 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 19 | 89°F | 69°F | 37% | 26% | 14 h 20 min |
| July 20 | 89°F | 69°F | 37% | 25% | 14 h 20 min |
| July 21 | 89°F | 69°F | 37% | 25% | 14 h 20 min |
| July 22 | 88°F | 69°F | 37% | 25% | 14 h 10 min |
| July 23 | 88°F | 69°F | 36% | 25% | 14 h 10 min |
| July 24 | 88°F | 69°F | 36% | 25% | 14 h 10 min |
| July 25 | 88°F | 69°F | 36% | 25% | 14 h 10 min |
| July 26 | 88°F | 69°F | 36% | 25% | 14 h 10 min |
| July 27 | 88°F | 69°F | 36% | 25% | 14 h 10 min |
| July 28 | 88°F | 69°F | 36% | 25% | 14 h 10 min |
| July 29 | 88°F | 69°F | 36% | 25% | 14 h |
| July 30 | 88°F | 69°F | 36% | 24% | 14 h |
| July 31 | 88°F | 69°F | 36% | 24% | 14 h |
- Normal high
- 88°FJuly average
- Normal low
- 69°FJuly average
- Precipitation
- 5.25 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 13
- 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
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013891; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Knoxville 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, 5.25 in falls on 12 days of a normal July, 2 of them with an inch or more.
In a normal July in Knoxville, 13 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013891.
How humid and windy is Knoxville in July?
At 3 p.m. the normal temperature is 86°F with 54% relative humidity and a dew point of 67°F; at 6 a.m. it is 70°F with 91% humidity. The wind averages 4.9 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. | 70°F | 67°F | 91% | 2.9 mph | 39% |
| 9 a.m. | 76°F | 69°F | 78% | 4.8 mph | 41% |
| noon | 83°F | 69°F | 62% | 6.1 mph | 36% |
| 3 p.m. | 86°F | 67°F | 54% | 7.1 mph | – |
| 6 p.m. | 84°F | 67°F | 58% | 6.6 mph | – |
| 9 p.m. | 77°F | 68°F | 74% | 4.4 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013891. 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 Knoxville?
The warmest July temperature on Knoxville's official record (since 1871) is 105°F, on July 1, 2012; the coldest is 49°F, on July 2, 1988. The wettest July brought 13.16 in (1917).
The July mean against the 1991-2020 normal of 78.5°F: 2021 78.7°F (+0.2), 2022 80.3°F (+1.8), 2023 78.5°F (at normal), 2024 80.3°F (+1.8), 2025 82.2°F (+3.7), 2026 80.8°F (+2.3). 5 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.7°F | +0.2°F | 1.70 in |
| 2022 | 80.3°F | +1.8°F | 7.79 in |
| 2023 | 78.5°F | at normal | 5.22 in |
| 2024 | 80.3°F | +1.8°F | 5.00 in |
| 2025 | 82.2°F | +3.7°F | 3.81 in |
| 2026 | 80.8°F | +2.3°F | 4.54 in |
Source: records: ACIS, NWS threaded record TYSthr; recent months: ACIS, station USW00013891. Records and recent months use complete months only.
How does July in Knoxville 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; Knoxville's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.