Fort Smith weather in August: Fort Smith, Arkansas: normal highs, lows, rain and records for August
Fort Smith in August has a normal high of 94°F and a normal low of 71°F, a daily mean of 82°F, falling from 95°F on the 1st to 91°F by the 31st. Measurable precipitation falls on 7 days in a normal August, 3.60 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 34°C and low of 22°C, 91 mm of precipitation in August.
- NOAA stationFort Smith Regional Airport
- Station IDUSW00013964
- Location35.33°N 94.36°W
- Elevation449 ft (137 m)
- From the center1 miles
- Population90,507
- Jan 51° 30°
- Feb 57° 33°
- Mar 66° 42°
- Apr 75° 50°
- May 81° 60°
- Jun 89° 68°
- Jul 94° 72°
- Aug 94° 71°
- Sep 87° 63°
- Oct 76° 51°
- Nov 63° 40°
- Dec 53° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fort Smith in August?
The normal high is 94°F and the normal low 71°F, for a daily mean of 82.3°F. August is 0.8°F cooler than July and 7.5°F warmer than September. August is the 2nd warmest month of the year in Fort Smith and the 8th wettest. Across the month the normal high falls 4°F, from 95°F on August 1 to 91°F on August 31. From one year to the next August's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 79°F and 85°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 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 95°F | 72°F | 23% | 16% |
| August 8 | 95°F | 72°F | 23% | 16% |
| August 15 | 94°F | 71°F | 24% | 17% |
| August 22 | 93°F | 70°F | 23% | 17% |
| August 31 | 91°F | 68°F | 24% | 17% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 95°F | 72°F | 23% | 16% | 14 h |
| August 2 | 95°F | 72°F | 23% | 16% | 14 h |
| August 3 | 95°F | 72°F | 23% | 16% | 13 h 50 min |
| August 4 | 95°F | 72°F | 23% | 16% | 13 h 50 min |
| August 5 | 95°F | 72°F | 23% | 16% | 13 h 50 min |
| August 6 | 95°F | 72°F | 23% | 16% | 13 h 50 min |
| August 7 | 95°F | 72°F | 23% | 16% | 13 h 50 min |
| August 8 | 95°F | 72°F | 23% | 16% | 13 h 40 min |
| August 9 | 95°F | 72°F | 23% | 17% | 13 h 40 min |
| August 10 | 95°F | 72°F | 24% | 17% | 13 h 40 min |
| August 11 | 95°F | 72°F | 24% | 17% | 13 h 40 min |
| August 12 | 95°F | 72°F | 24% | 17% | 13 h 40 min |
| August 13 | 94°F | 72°F | 24% | 17% | 13 h 40 min |
| August 14 | 94°F | 71°F | 24% | 17% | 13 h 30 min |
| August 15 | 94°F | 71°F | 24% | 17% | 13 h 30 min |
| August 16 | 94°F | 71°F | 24% | 17% | 13 h 30 min |
| August 17 | 94°F | 71°F | 24% | 17% | 13 h 30 min |
| August 18 | 94°F | 71°F | 23% | 17% | 13 h 30 min |
| August 19 | 94°F | 71°F | 23% | 17% | 13 h 20 min |
| August 20 | 93°F | 71°F | 23% | 17% | 13 h 20 min |
| August 21 | 93°F | 71°F | 23% | 17% | 13 h 20 min |
| August 22 | 93°F | 70°F | 23% | 17% | 13 h 20 min |
| August 23 | 93°F | 70°F | 23% | 17% | 13 h 20 min |
| August 24 | 93°F | 70°F | 23% | 17% | 13 h 10 min |
| August 25 | 93°F | 70°F | 23% | 17% | 13 h 10 min |
| August 26 | 92°F | 70°F | 23% | 17% | 13 h 10 min |
| August 27 | 92°F | 69°F | 23% | 17% | 13 h 10 min |
| August 28 | 92°F | 69°F | 23% | 17% | 13 h 10 min |
| August 29 | 92°F | 69°F | 24% | 17% | 13 h |
| August 30 | 91°F | 69°F | 24% | 17% | 13 h |
| August 31 | 91°F | 68°F | 24% | 17% | 13 h |
- Normal high
- 94°FAugust average
- Normal low
- 71°FAugust average
- Precipitation
- 3.60 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 23
- Daylight
- 14 h to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013964; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fort Smith in August?
On a given August day the chance of 0.01 inch or more is 23% on average, highest around August 30 (24%). In all, 3.60 in falls on 7 days of a normal August, 1 of them with an inch or more.
In a normal August in Fort Smith, 23 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013964.
How humid and windy is Fort Smith in August?
At 3 p.m. the normal temperature is 90°F with 45% relative humidity and a dew point of 66°F; at 6 a.m. it is 71°F with 89% humidity. The wind averages 5.5 mph, most often from the east 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. | 71°F | 67°F | 89% | 3.9 mph | 71% |
| 9 a.m. | 79°F | 68°F | 70% | 5.9 mph | 72% |
| noon | 87°F | 67°F | 52% | 7.0 mph | 69% |
| 3 p.m. | 90°F | 66°F | 45% | 8.0 mph | 71% |
| 6 p.m. | 87°F | 66°F | 51% | 6.8 mph | 81% |
| 9 p.m. | 79°F | 68°F | 69% | 4.0 mph | 84% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013964. 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 August in Fort Smith?
The warmest August temperature on Fort Smith's official record (since 1882) is 115°F, on August 3, 2011; the coldest is 45°F, on August 24, 1891. The wettest August brought 11.70 in (2019).
The August mean against the 1991-2020 normal of 82.3°F: 2021 83.6°F (+1.3), 2022 83.8°F (+1.5), 2023 85.5°F (+3.3), 2024 83.7°F (+1.4), 2025 82.7°F (+0.4), 2026 88.0°F (+5.7). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 83.6°F | +1.3°F | 0.86 in |
| 2022 | 83.8°F | +1.5°F | 2.02 in |
| 2023 | 85.5°F | +3.3°F | 2.65 in |
| 2024 | 83.7°F | +1.4°F | 7.20 in |
| 2025 | 82.7°F | +0.4°F | 3.09 in |
| 2026 | 88.0°F | +5.7°F | 0.26 in |
Source: records: ACIS, NWS threaded record FSMthr; recent months: ACIS, station USW00013964. Records and recent months use complete months only.
How does August in Fort Smith compare across Arkansas?
Across the 86 places PlainClimate covers in Arkansas, August normal highs run from 83°F in Deer to 95°F in Crossett; Fort Smith's is 94°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.