West Lafayette weather in August: West Lafayette, Indiana: normal highs, lows, rain and records for August
West Lafayette in August has a normal high of 82°F and a normal low of 60°F, a daily mean of 71°F, falling from 82°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 3.66 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 93 mm of precipitation in August.
- NOAA stationWest Lafayette (6 mi NW)
- Station IDUSC00129430
- Location40.48°N 86.99°W
- Elevation708 ft (216 m)
- From the center4 miles
- Population46,338
- Jan 32° 16°
- Feb 37° 20°
- Mar 48° 29°
- Apr 61° 39°
- May 72° 51°
- Jun 81° 60°
- Jul 83° 63°
- Aug 82° 60°
- Sep 77° 52°
- Oct 65° 41°
- Nov 50° 32°
- Dec 37° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is West Lafayette in August?
The normal high is 82°F and the normal low 60°F, for a daily mean of 70.9°F. August is 1.9°F cooler than July and 6.3°F warmer than September. August is the 2nd warmest month of the year in West Lafayette and the 5th wettest. Across the month the normal high falls 1°F, from 82°F on August 1 to 81°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 74°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 62°F | 31% | 20% |
| August 8 | 82°F | 61°F | 30% | 19% |
| August 15 | 82°F | 61°F | 29% | 18% |
| August 22 | 82°F | 60°F | 28% | 18% |
| August 31 | 81°F | 58°F | 27% | 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 | 62°F | 31% | 20% | 14 h 20 min |
| August 2 | 82°F | 62°F | 31% | 20% | 14 h 20 min |
| August 3 | 82°F | 61°F | 31% | 20% | 14 h 20 min |
| August 4 | 82°F | 61°F | 31% | 19% | 14 h 10 min |
| August 5 | 82°F | 61°F | 30% | 19% | 14 h 10 min |
| August 6 | 82°F | 61°F | 30% | 19% | 14 h 10 min |
| August 7 | 82°F | 61°F | 30% | 19% | 14 h 10 min |
| August 8 | 82°F | 61°F | 30% | 19% | 14 h 10 min |
| August 9 | 82°F | 61°F | 30% | 19% | 14 h |
| August 10 | 82°F | 61°F | 30% | 18% | 14 h |
| August 11 | 82°F | 61°F | 29% | 18% | 14 h |
| August 12 | 82°F | 61°F | 29% | 18% | 14 h |
| August 13 | 82°F | 61°F | 29% | 18% | 13 h 50 min |
| August 14 | 82°F | 61°F | 29% | 18% | 13 h 50 min |
| August 15 | 82°F | 61°F | 29% | 18% | 13 h 50 min |
| August 16 | 82°F | 60°F | 29% | 18% | 13 h 50 min |
| August 17 | 82°F | 60°F | 29% | 18% | 13 h 50 min |
| August 18 | 82°F | 60°F | 29% | 18% | 13 h 40 min |
| August 19 | 82°F | 60°F | 29% | 18% | 13 h 40 min |
| August 20 | 82°F | 60°F | 28% | 18% | 13 h 40 min |
| August 21 | 82°F | 60°F | 28% | 18% | 13 h 40 min |
| August 22 | 82°F | 60°F | 28% | 18% | 13 h 30 min |
| August 23 | 82°F | 59°F | 28% | 18% | 13 h 30 min |
| August 24 | 81°F | 59°F | 28% | 18% | 13 h 30 min |
| August 25 | 81°F | 59°F | 28% | 18% | 13 h 30 min |
| August 26 | 81°F | 59°F | 27% | 17% | 13 h 20 min |
| August 27 | 81°F | 59°F | 27% | 17% | 13 h 20 min |
| August 28 | 81°F | 58°F | 27% | 17% | 13 h 20 min |
| August 29 | 81°F | 58°F | 27% | 17% | 13 h 20 min |
| August 30 | 81°F | 58°F | 27% | 17% | 13 h 10 min |
| August 31 | 81°F | 58°F | 27% | 17% | 13 h 10 min |
- Normal high
- 82°FAugust average
- Normal low
- 60°FAugust average
- Precipitation
- 3.66 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 14 h 20 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 23
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00129430; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in West Lafayette in August?
On a given August day the chance of 0.01 inch or more is 29% on average, highest around August 1 (31%). In all, 3.66 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in West Lafayette, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00129430.
What are the records for August in West Lafayette?
The warmest August temperature on this station's record (since 1901) is 103°F, on August 5, 1918; the coldest is 35°F, on August 29, 1965. The wettest August brought 9.44 in (1977).
The August mean against the 1991-2020 normal of 70.9°F: 2021 74.7°F (+3.8), 2022 72.3°F (+1.3), 2023 73.7°F (+2.8), 2025 72.5°F (+1.6), 2026 75.3°F (+4.4). 5 of 5 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.7°F | +3.8°F | 2.40 in |
| 2022 | 72.3°F | +1.3°F | 5.18 in |
| 2023 | 73.7°F | +2.8°F | 4.60 in |
| 2025 | 72.5°F | +1.6°F | 2.60 in |
| 2026 | 75.3°F | +4.4°F | 9.26 in |
Source: records: ACIS, station USC00129430; recent months: ACIS, station USC00129430. Records and recent months use complete months only.
How does August in West Lafayette compare across Indiana?
Across the 99 places PlainClimate covers in Indiana, August normal highs run from 80°F in Angola to 88°F in English; West Lafayette's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- West Lafayette in July83°F by day, 63°F at night
- West Lafayette in September77°F by day, 52°F at night
- West Lafayette through the yearEvery month, frost dates, records and recent years
- Indiana in AugustThe statewide normal and the warmest and coolest places
- English: Indiana's warmest Augustnormal high 88°F