Lafayette weather in July: Lafayette, Indiana: normal highs, lows, rain and records for July
Lafayette in July has a normal high of 84°F and a normal low of 63°F, a daily mean of 74°F, holding near 84°F all month. Measurable precipitation falls on 12 days in a normal July, 4.08 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 17°C, 104 mm of precipitation in July.
- NOAA stationLafayette Purdue University Airport
- Station IDUSW00014835
- Location40.41°N 86.94°W
- Elevation599 ft (183 m)
- Population71,757
- Jan 33° 18°
- Feb 38° 21°
- Mar 50° 30°
- Apr 62° 40°
- May 73° 51°
- Jun 81° 60°
- Jul 84° 63°
- Aug 83° 62°
- Sep 77° 54°
- Oct 65° 43°
- Nov 50° 33°
- Dec 38° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lafayette in July?
The normal high is 84°F and the normal low 63°F, for a daily mean of 73.6°F. July is 2.9°F warmer than June and 1.4°F warmer than August. July is the warmest month of the year in Lafayette and the 2nd wettest. Across the month the normal high falls 1°F, from 84°F on July 1 to 83°F on July 31. From one year to the next July's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Julys in three average between 71°F and 76°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 | 84°F | 63°F | 39% | 25% |
| July 8 | 84°F | 64°F | 39% | 25% |
| July 15 | 84°F | 64°F | 38% | 24% |
| July 22 | 84°F | 63°F | 38% | 22% |
| July 31 | 83°F | 63°F | 37% | 21% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 7, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 84°F | 63°F | 39% | 25% | 15 h |
| July 2 | 84°F | 63°F | 39% | 25% | 15 h |
| July 3 | 84°F | 63°F | 39% | 25% | 15 h |
| July 4 | 84°F | 63°F | 39% | 25% | 15 h |
| July 5 | 84°F | 63°F | 39% | 25% | 15 h |
| July 6 | 84°F | 63°F | 39% | 25% | 15 h |
| July 7 | 84°F | 64°F | 39% | 25% | 15 h |
| July 8 | 84°F | 64°F | 39% | 25% | 15 h |
| July 9 | 84°F | 64°F | 39% | 25% | 15 h |
| July 10 | 84°F | 64°F | 39% | 24% | 14 h 50 min |
| July 11 | 84°F | 64°F | 39% | 24% | 14 h 50 min |
| July 12 | 84°F | 64°F | 39% | 24% | 14 h 50 min |
| July 13 | 84°F | 64°F | 39% | 24% | 14 h 50 min |
| July 14 | 84°F | 64°F | 39% | 24% | 14 h 50 min |
| July 15 | 84°F | 64°F | 38% | 24% | 14 h 50 min |
| July 16 | 84°F | 64°F | 38% | 24% | 14 h 50 min |
| July 17 | 84°F | 64°F | 38% | 23% | 14 h 50 min |
| July 18 | 84°F | 64°F | 38% | 23% | 14 h 40 min |
| July 19 | 84°F | 64°F | 38% | 23% | 14 h 40 min |
| July 20 | 84°F | 64°F | 38% | 23% | 14 h 40 min |
| July 21 | 84°F | 64°F | 38% | 23% | 14 h 40 min |
| July 22 | 84°F | 63°F | 38% | 22% | 14 h 40 min |
| July 23 | 84°F | 63°F | 38% | 22% | 14 h 40 min |
| July 24 | 84°F | 63°F | 38% | 22% | 14 h 30 min |
| July 25 | 84°F | 63°F | 38% | 22% | 14 h 30 min |
| July 26 | 84°F | 63°F | 38% | 22% | 14 h 30 min |
| July 27 | 84°F | 63°F | 38% | 21% | 14 h 30 min |
| July 28 | 84°F | 63°F | 38% | 21% | 14 h 30 min |
| July 29 | 84°F | 63°F | 37% | 21% | 14 h 30 min |
| July 30 | 84°F | 63°F | 37% | 21% | 14 h 20 min |
| July 31 | 83°F | 63°F | 37% | 21% | 14 h 20 min |
- Normal high
- 84°FJuly average
- Normal low
- 63°FJuly average
- Precipitation
- 4.08 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 15 h to 14 h 20 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 25
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014835; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lafayette in July?
On a given July day the chance of 0.01 inch or more is 38% on average, highest around July 1 (39%). In all, 4.08 in falls on 12 days of a normal July, 1 of them with an inch or more.
In a normal July in Lafayette, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014835.
How humid and windy is Lafayette in July?
At 3 p.m. the normal temperature is 82°F with 55% relative humidity and a dew point of 65°F; at 6 a.m. it is 65°F with 92% humidity. The wind averages 5.3 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 65°F | 62°F | 92% | 2.7 mph | 72% |
| 9 a.m. | 73°F | 65°F | 76% | 5.5 mph | 77% |
| noon | 80°F | 65°F | 59% | 7.8 mph | 62% |
| 3 p.m. | 82°F | 65°F | 55% | 8.6 mph | 59% |
| 6 p.m. | 81°F | 65°F | 58% | 7.8 mph | 72% |
| 9 p.m. | 73°F | 65°F | 78% | 4.3 mph | 79% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014835. 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 Lafayette?
The warmest July temperature on this station's record (since 1944) is 105°F, on July 22, 1983; the coldest is 43°F, on July 6, 1972. The wettest July brought 9.99 in (1992).
The July mean against the 1991-2020 normal of 73.6°F: 2021 73.5°F (−0.1), 2022 75.6°F (+2.0), 2023 73.9°F (+0.3), 2024 73.0°F (−0.6), 2025 77.6°F (+4.0), 2026 75.7°F (+2.1). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.5°F | −0.1°F | 4.40 in |
| 2022 | 75.6°F | +2.0°F | 0.58 in |
| 2023 | 73.9°F | +0.3°F | 6.47 in |
| 2024 | 73.0°F | −0.6°F | 5.18 in |
| 2025 | 77.6°F | +4.0°F | 5.79 in |
| 2026 | 75.7°F | +2.1°F | 2.66 in |
Source: records: ACIS, station USW00014835; recent months: ACIS, station USW00014835. Records and recent months use complete months only.
How does July in Lafayette compare across Indiana?
Across the 99 places PlainClimate covers in Indiana, July normal highs run from 82°F in Angola to 89°F in Vincennes; Lafayette's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.