Laredo weather in September: Laredo, Texas: normal highs, lows, rain and records for September
Laredo in September has a normal high of 94°F and a normal low of 72°F, a daily mean of 83°F, falling from 97°F on the 1st to 91°F by the 30th. The month brings 3.64 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 34°C and low of 22°C, 92 mm of precipitation in September.
- NOAA stationLaredo International Airport
- Station IDUSW00012907
- Location27.53°N 99.47°W
- Elevation505 ft (154 m)
- From the center2 miles
- Population261,260
- Jan 68° 47°
- Feb 74° 51°
- Mar 81° 58°
- Apr 88° 64°
- May 93° 71°
- Jun 99° 75°
- Jul 100° 76°
- Aug 101° 77°
- Sep 94° 72°
- Oct 87° 65°
- Nov 77° 56°
- Dec 69° 48°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Laredo in September?
The normal high is 94°F and the normal low 72°F, for a daily mean of 83.0°F. September is 5.9°F cooler than August and 6.7°F warmer than October. September is the 4th warmest month of the year in Laredo and the wettest. Across the month the normal high falls 6°F, from 97°F on September 1 to 91°F on September 30.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 97°F | 75°F | – | – |
| September 8 | 95°F | 74°F | – | – |
| September 15 | 93°F | 73°F | – | – |
| September 22 | 92°F | 71°F | – | – |
| September 30 | 91°F | 70°F | – | – |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 97°F | 75°F | – | – | 12 h 40 min |
| September 2 | 97°F | 75°F | – | – | 12 h 40 min |
| September 3 | 96°F | 74°F | – | – | 12 h 40 min |
| September 4 | 96°F | 74°F | – | – | 12 h 40 min |
| September 5 | 96°F | 74°F | – | – | 12 h 40 min |
| September 6 | 96°F | 74°F | – | – | 12 h 40 min |
| September 7 | 95°F | 74°F | – | – | 12 h 30 min |
| September 8 | 95°F | 74°F | – | – | 12 h 30 min |
| September 9 | 95°F | 73°F | – | – | 12 h 30 min |
| September 10 | 94°F | 73°F | – | – | 12 h 30 min |
| September 11 | 94°F | 73°F | – | – | 12 h 30 min |
| September 12 | 94°F | 73°F | – | – | 12 h 30 min |
| September 13 | 94°F | 73°F | – | – | 12 h 20 min |
| September 14 | 94°F | 73°F | – | – | 12 h 20 min |
| September 15 | 93°F | 73°F | – | – | 12 h 20 min |
| September 16 | 93°F | 72°F | – | – | 12 h 20 min |
| September 17 | 93°F | 72°F | – | – | 12 h 20 min |
| September 18 | 93°F | 72°F | – | – | 12 h 20 min |
| September 19 | 93°F | 72°F | – | – | 12 h 20 min |
| September 20 | 92°F | 72°F | – | – | 12 h 10 min |
| September 21 | 92°F | 72°F | – | – | 12 h 10 min |
| September 22 | 92°F | 71°F | – | – | 12 h 10 min |
| September 23 | 92°F | 71°F | – | – | 12 h 10 min |
| September 24 | 92°F | 71°F | – | – | 12 h 10 min |
| September 25 | 92°F | 71°F | – | – | 12 h 10 min |
| September 26 | 92°F | 71°F | – | – | 12 h |
| September 27 | 91°F | 71°F | – | – | 12 h |
| September 28 | 91°F | 70°F | – | – | 12 h |
| September 29 | 91°F | 70°F | – | – | 12 h |
| September 30 | 91°F | 70°F | – | – | 12 h |
- Normal high
- 94°FSeptember average
- Normal low
- 72°FSeptember average
- Precipitation
- 3.64 inmonth total
- Days at 90°F or more
- 24
- Daylight
- 12 h 40 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 29
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00012907; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Laredo in September?
In a normal September in Laredo, 24 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00012907.
What are the records for September in Laredo?
The warmest September temperature on Laredo's official record (since 1902) is 110°F, on September 21, 1926; the coldest is 45°F, on September 29, 1918. The wettest September brought 12.94 in (1923).
The September mean against the 1991-2020 normal of 83.0°F: 2021 86.0°F (+3.0), 2022 83.3°F (+0.3), 2023 88.8°F (+5.8), 2024 84.3°F (+1.3), 2025 85.9°F (+2.9), 2026 90.2°F (+7.2). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 86.0°F | +3.0°F | 1.52 in |
| 2022 | 83.3°F | +0.3°F | 1.18 in |
| 2023 | 88.8°F | +5.8°F | 3.33 in |
| 2024 | 84.3°F | +1.3°F | 2.94 in |
| 2025 | 85.9°F | +2.9°F | 6.05 in |
| 2026 | 90.2°F | +7.2°F | 0.80 in |
Source: records: ACIS, NWS threaded record LRDthr; recent months: ACIS, station USW00012907. Records and recent months use complete months only.
How does September in Laredo compare across Texas?
Across the 321 places PlainClimate covers in Texas, September normal highs run from 81°F in Hart to 95°F in Presidio; Laredo's is 94°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.