Harlingen weather in August: Harlingen, Texas: normal highs, lows, rain and records for August
Harlingen in August has a normal high of 97°F and a normal low of 75°F, a daily mean of 86°F, falling from 98°F on the 1st to 95°F by the 31st. Measurable precipitation falls on 5 days in a normal August, 1.92 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 36°C and low of 24°C, 49 mm of precipitation in August.
- NOAA stationHarlingen Rio Grande Airport
- Station IDUSW00012904
- Location26.23°N 97.65°W
- Elevation34 ft (10 m)
- Population72,234
- Jan 72° 50°
- Feb 76° 54°
- Mar 81° 59°
- Apr 87° 65°
- May 91° 71°
- Jun 95° 75°
- Jul 96° 75°
- Aug 97° 75°
- Sep 92° 73°
- Oct 88° 66°
- Nov 79° 57°
- Dec 73° 52°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Harlingen in August?
The normal high is 97°F and the normal low 75°F, for a daily mean of 86.2°F. August is 0.4°F warmer than July and 3.9°F warmer than September. August is the warmest month of the year in Harlingen and the 5th wettest. Across the month the normal high falls 3°F, from 98°F on August 1 to 95°F on August 31. From one year to the next August's mean temperature typically moves about 1.2°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 85°F and 87°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 | 98°F | 76°F | 15% | 8% |
| August 8 | 98°F | 76°F | 16% | 9% |
| August 15 | 98°F | 76°F | 19% | 11% |
| August 22 | 97°F | 75°F | 23% | 14% |
| August 31 | 95°F | 75°F | 30% | 19% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 6, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 98°F | 76°F | 15% | 8% | 13 h 20 min |
| August 2 | 98°F | 76°F | 15% | 8% | 13 h 20 min |
| August 3 | 98°F | 76°F | 15% | 8% | 13 h 20 min |
| August 4 | 98°F | 76°F | 15% | 8% | 13 h 20 min |
| August 5 | 98°F | 76°F | 15% | 8% | 13 h 20 min |
| August 6 | 98°F | 76°F | 15% | 8% | 13 h 20 min |
| August 7 | 98°F | 76°F | 16% | 8% | 13 h 20 min |
| August 8 | 98°F | 76°F | 16% | 9% | 13 h 10 min |
| August 9 | 98°F | 76°F | 16% | 9% | 13 h 10 min |
| August 10 | 98°F | 76°F | 17% | 9% | 13 h 10 min |
| August 11 | 98°F | 76°F | 17% | 9% | 13 h 10 min |
| August 12 | 98°F | 76°F | 18% | 10% | 13 h 10 min |
| August 13 | 98°F | 76°F | 18% | 10% | 13 h 10 min |
| August 14 | 98°F | 76°F | 18% | 10% | 13 h 10 min |
| August 15 | 98°F | 76°F | 19% | 11% | 13 h 10 min |
| August 16 | 98°F | 75°F | 19% | 11% | 13 h |
| August 17 | 98°F | 75°F | 20% | 11% | 13 h |
| August 18 | 97°F | 75°F | 21% | 12% | 13 h |
| August 19 | 97°F | 75°F | 21% | 12% | 13 h |
| August 20 | 97°F | 75°F | 22% | 13% | 13 h |
| August 21 | 97°F | 75°F | 23% | 13% | 13 h |
| August 22 | 97°F | 75°F | 23% | 14% | 13 h |
| August 23 | 97°F | 75°F | 24% | 14% | 12 h 50 min |
| August 24 | 97°F | 75°F | 25% | 15% | 12 h 50 min |
| August 25 | 96°F | 75°F | 26% | 15% | 12 h 50 min |
| August 26 | 96°F | 75°F | 26% | 16% | 12 h 50 min |
| August 27 | 96°F | 75°F | 27% | 17% | 12 h 50 min |
| August 28 | 96°F | 75°F | 28% | 17% | 12 h 50 min |
| August 29 | 95°F | 75°F | 29% | 18% | 12 h 50 min |
| August 30 | 95°F | 75°F | 29% | 18% | 12 h 40 min |
| August 31 | 95°F | 75°F | 30% | 19% | 12 h 40 min |
- Normal high
- 97°FAugust average
- Normal low
- 75°FAugust average
- Precipitation
- 1.92 inmonth total
- Days with precipitation
- 50.01 inch or more
- Days at 90°F or more
- 30
- Daylight
- 13 h 20 min to 12 h 40 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 87%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00012904; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Harlingen in August?
On a given August day the chance of 0.01 inch or more is 21% on average, highest around August 31 (30%). In all, 1.92 in falls on 5 days of a normal August, 1 of them with an inch or more.
In a normal August in Harlingen, 30 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00012904.
What are the records for August in Harlingen?
The warmest August temperature on this station's record (since 1952) is 106°F, on August 28, 2011; the coldest is 68°F, on August 15, 1999. The wettest August brought 11.32 in (1953).
The August mean against the 1991-2020 normal of 86.2°F: 2021 85.6°F (−0.6), 2022 85.2°F (−1.0), 2023 88.4°F (+2.2), 2024 85.8°F (−0.4), 2025 86.1°F (−0.1), 2026 88.7°F (+2.5). 2 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 85.6°F | −0.6°F | 0.86 in |
| 2022 | 85.2°F | −1.0°F | 3.34 in |
| 2023 | 88.4°F | +2.2°F | 1.13 in |
| 2024 | 85.8°F | −0.4°F | 1.84 in |
| 2025 | 86.1°F | −0.1°F | 1.76 in |
| 2026 | 88.7°F | +2.5°F | 0.02 in |
Source: records: ACIS, station USW00012904; recent months: ACIS, station USW00012904. Records and recent months use complete months only.
How does August in Harlingen compare across Texas?
Across the 321 places PlainClimate covers in Texas, August normal highs run from 87°F in Marfa to 101°F in Del Rio; Harlingen's is 97°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.