Tucson weather in August: Tucson, Arizona: normal highs, lows, rain and records for August
Tucson in August has a normal high of 99°F and a normal low of 75°F, a daily mean of 87°F, holding near 99°F all month. Measurable precipitation falls on 9 days in a normal August, 1.98 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 37°C and low of 24°C, 50 mm of precipitation in August.
- NOAA stationTucson International Airport
- Station IDUSW00023160
- Location32.13°N 110.96°W
- Elevation2,549 ft (777 m)
- From the center5 miles
- Population554,013
- Jan 67° 41°
- Feb 69° 43°
- Mar 76° 48°
- Apr 83° 53°
- May 92° 62°
- Jun 101° 71°
- Jul 100° 76°
- Aug 99° 75°
- Sep 95° 70°
- Oct 86° 59°
- Nov 75° 48°
- Dec 66° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Tucson in August?
The normal high is 99°F and the normal low 75°F, for a daily mean of 86.9°F. August is 1.3°F cooler than July and 4.1°F warmer than September. August is the 2nd warmest month of the year in Tucson and the 2nd wettest. Across the month the normal high falls 1°F, from 99°F on August 1 to 98°F on August 31. From one year to the next August's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 85°F and 89°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 30%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 99°F | 76°F | 30% | 15% |
| August 8 | 99°F | 76°F | 29% | 15% |
| August 15 | 99°F | 75°F | 28% | 14% |
| August 22 | 99°F | 75°F | 26% | 13% |
| August 31 | 98°F | 74°F | 23% | 12% |
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 | 99°F | 76°F | 30% | 15% | 13 h 40 min |
| August 2 | 99°F | 76°F | 29% | 15% | 13 h 40 min |
| August 3 | 99°F | 76°F | 29% | 15% | 13 h 40 min |
| August 4 | 99°F | 76°F | 29% | 15% | 13 h 40 min |
| August 5 | 99°F | 76°F | 29% | 15% | 13 h 40 min |
| August 6 | 99°F | 76°F | 29% | 15% | 13 h 40 min |
| August 7 | 99°F | 76°F | 29% | 15% | 13 h 30 min |
| August 8 | 99°F | 76°F | 29% | 15% | 13 h 30 min |
| August 9 | 99°F | 76°F | 29% | 15% | 13 h 30 min |
| August 10 | 99°F | 76°F | 29% | 15% | 13 h 30 min |
| August 11 | 99°F | 76°F | 28% | 15% | 13 h 30 min |
| August 12 | 99°F | 75°F | 28% | 14% | 13 h 30 min |
| August 13 | 99°F | 75°F | 28% | 14% | 13 h 30 min |
| August 14 | 99°F | 75°F | 28% | 14% | 13 h 20 min |
| August 15 | 99°F | 75°F | 28% | 14% | 13 h 20 min |
| August 16 | 99°F | 75°F | 28% | 14% | 13 h 20 min |
| August 17 | 99°F | 75°F | 28% | 14% | 13 h 20 min |
| August 18 | 99°F | 75°F | 27% | 14% | 13 h 20 min |
| August 19 | 99°F | 75°F | 27% | 14% | 13 h 20 min |
| August 20 | 99°F | 75°F | 27% | 14% | 13 h 10 min |
| August 21 | 99°F | 75°F | 26% | 13% | 13 h 10 min |
| August 22 | 99°F | 75°F | 26% | 13% | 13 h 10 min |
| August 23 | 99°F | 75°F | 26% | 13% | 13 h 10 min |
| August 24 | 99°F | 75°F | 26% | 13% | 13 h 10 min |
| August 25 | 99°F | 75°F | 25% | 13% | 13 h |
| August 26 | 99°F | 75°F | 25% | 12% | 13 h |
| August 27 | 99°F | 75°F | 24% | 12% | 13 h |
| August 28 | 98°F | 74°F | 24% | 12% | 13 h |
| August 29 | 98°F | 74°F | 24% | 12% | 13 h |
| August 30 | 98°F | 74°F | 23% | 12% | 13 h |
| August 31 | 98°F | 74°F | 23% | 12% | 12 h 50 min |
- Normal high
- 99°FAugust average
- Normal low
- 75°FAugust average
- Precipitation
- 1.98 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 29
- Daylight
- 13 h 40 min to 12 h 50 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023160; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Tucson in August?
On a given August day the chance of 0.01 inch or more is 27% on average, highest around August 1 (30%). In all, 1.98 in falls on 9 days of a normal August.
In a normal August in Tucson, 29 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023160.
How humid and windy is Tucson in August?
At 3 p.m. the normal temperature is 95°F with 25% relative humidity and a dew point of 54°F; at 6 a.m. it is 74°F with 60% humidity. The wind averages 7.4 mph, most often from the west-northwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 74°F | 60°F | 60% | 7.1 mph | 81% |
| 9 a.m. | 83°F | 60°F | 46% | 6.1 mph | 87% |
| noon | 92°F | 56°F | 29% | 6.5 mph | 85% |
| 3 p.m. | 95°F | 54°F | 25% | 8.7 mph | 74% |
| 6 p.m. | 91°F | 54°F | 28% | 9.4 mph | 76% |
| 9 p.m. | 84°F | 57°F | 39% | 7.0 mph | 76% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023160. 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 Tucson?
The warmest August temperature on Tucson's official record (since 1894) is 112°F, on August 1, 1993; the coldest is 55°F, on August 20, 1917. The wettest August brought 7.93 in (1955).
The August mean against the 1991-2020 normal of 86.9°F: 2021 85.7°F (−1.2), 2022 85.8°F (−1.1), 2023 89.9°F (+3.0), 2024 89.0°F (+2.1), 2025 90.6°F (+3.7), 2026 89.7°F (+2.8). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 85.7°F | −1.2°F | 3.85 in |
| 2022 | 85.8°F | −1.1°F | 2.82 in |
| 2023 | 89.9°F | +3.0°F | 2.39 in |
| 2024 | 89.0°F | +2.1°F | 1.20 in |
| 2025 | 90.6°F | +3.7°F | 0.11 in |
| 2026 | 89.7°F | +2.8°F | 3.21 in |
Source: records: ACIS, NWS threaded record TUSthr; recent months: ACIS, station USW00023160. Records and recent months use complete months only.
How does August in Tucson compare across Arizona?
Across the 97 places PlainClimate covers in Arizona, August normal highs run from 73°F in Greer to 109°F in Bullhead City; Tucson's is 99°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.