Pontiac weather in August: Pontiac, Michigan: normal highs, lows, rain and records for August
Pontiac in August has a normal high of 80°F and a normal low of 61°F, a daily mean of 71°F, falling from 82°F on the 1st to 78°F by the 31st. Measurable precipitation falls on 11 days in a normal August, 2.91 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 16°C, 74 mm of precipitation in August.
- NOAA stationPontiac Oakland County International Airport
- Station IDUSW00094817
- Location42.66°N 83.42°W
- Elevation976 ft (298 m)
- From the center7 miles
- Population62,528
- Jan 30° 17°
- Feb 33° 18°
- Mar 43° 26°
- Apr 57° 36°
- May 69° 48°
- Jun 78° 58°
- Jul 82° 62°
- Aug 80° 61°
- Sep 73° 53°
- Oct 60° 42°
- Nov 46° 32°
- Dec 35° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Pontiac in August?
The normal high is 80°F and the normal low 61°F, for a daily mean of 70.6°F. August is 1.6°F cooler than July and 7.8°F warmer than September. August is the 2nd warmest month of the year in Pontiac and the 4th wettest. Across the month the normal high falls 4°F, from 82°F on August 1 to 78°F on August 31. From one year to the next August's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 68°F and 73°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 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 63°F | 35% | 19% |
| August 8 | 81°F | 62°F | 34% | 18% |
| August 15 | 80°F | 62°F | 35% | 18% |
| August 22 | 79°F | 61°F | 35% | 18% |
| August 31 | 78°F | 58°F | 36% | 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 | 82°F | 63°F | 35% | 19% | 14 h 30 min |
| August 2 | 82°F | 63°F | 35% | 19% | 14 h 30 min |
| August 3 | 82°F | 63°F | 35% | 18% | 14 h 30 min |
| August 4 | 81°F | 63°F | 35% | 18% | 14 h 20 min |
| August 5 | 81°F | 63°F | 34% | 18% | 14 h 20 min |
| August 6 | 81°F | 63°F | 34% | 18% | 14 h 20 min |
| August 7 | 81°F | 62°F | 34% | 18% | 14 h 20 min |
| August 8 | 81°F | 62°F | 34% | 18% | 14 h 20 min |
| August 9 | 81°F | 62°F | 34% | 18% | 14 h 10 min |
| August 10 | 81°F | 62°F | 34% | 18% | 14 h 10 min |
| August 11 | 81°F | 62°F | 34% | 18% | 14 h 10 min |
| August 12 | 81°F | 62°F | 34% | 18% | 14 h 10 min |
| August 13 | 81°F | 62°F | 34% | 18% | 14 h |
| August 14 | 80°F | 62°F | 35% | 18% | 14 h |
| August 15 | 80°F | 62°F | 35% | 18% | 14 h |
| August 16 | 80°F | 62°F | 35% | 18% | 14 h |
| August 17 | 80°F | 61°F | 35% | 17% | 13 h 50 min |
| August 18 | 80°F | 61°F | 35% | 17% | 13 h 50 min |
| August 19 | 80°F | 61°F | 35% | 18% | 13 h 50 min |
| August 20 | 80°F | 61°F | 35% | 18% | 13 h 50 min |
| August 21 | 80°F | 61°F | 35% | 18% | 13 h 40 min |
| August 22 | 79°F | 61°F | 35% | 18% | 13 h 40 min |
| August 23 | 79°F | 60°F | 35% | 18% | 13 h 40 min |
| August 24 | 79°F | 60°F | 35% | 17% | 13 h 30 min |
| August 25 | 79°F | 60°F | 36% | 17% | 13 h 30 min |
| August 26 | 79°F | 60°F | 36% | 17% | 13 h 30 min |
| August 27 | 79°F | 60°F | 36% | 17% | 13 h 30 min |
| August 28 | 78°F | 59°F | 36% | 17% | 13 h 20 min |
| August 29 | 78°F | 59°F | 36% | 17% | 13 h 20 min |
| August 30 | 78°F | 59°F | 36% | 17% | 13 h 20 min |
| August 31 | 78°F | 58°F | 36% | 17% | 13 h 20 min |
- Normal high
- 80°FAugust average
- Normal low
- 61°FAugust average
- Precipitation
- 2.91 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 14 h 30 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 18
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094817; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Pontiac in August?
On a given August day the chance of 0.01 inch or more is 35% on average, highest around August 31 (36%). In all, 2.91 in falls on 11 days of a normal August, 1 of them with an inch or more.
In a normal August in Pontiac, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094817.
What are the records for August in Pontiac?
The warmest August temperature on this station's record (since 1998) is 98°F, on August 8, 2001; the coldest is 46°F, on August 20, 2000. The wettest August brought 7.36 in (2023).
The August mean against the 1991-2020 normal of 70.6°F: 2021 74.2°F (+3.6), 2022 72.0°F (+1.4), 2023 68.0°F (−2.6), 2024 70.8°F (+0.2), 2025 70.5°F (at normal), 2026 71.7°F (+1.1). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.2°F | +3.6°F | 3.82 in |
| 2022 | 72.0°F | +1.4°F | 3.44 in |
| 2023 | 68.0°F | −2.6°F | 7.36 in |
| 2024 | 70.8°F | +0.2°F | 5.01 in |
| 2025 | 70.5°F | at normal | – |
| 2026 | 71.7°F | +1.1°F | 2.31 in |
Source: records: ACIS, station USW00094817; recent months: ACIS, station USW00094817. Records and recent months use complete months only.
How does August in Pontiac compare across Michigan?
Across the 140 places PlainClimate covers in Michigan, August normal highs run from 72°F in Munising to 83°F in Morenci; Pontiac's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.