Cotulla
United States · 18 May 2021
Average
25.7°C
low 23.3°C · high 30.7°C
Rainfall
7.5mm
rain recorded
Wind
4.7m/s
daily average
Humidity
75%
daily average
Cloud
70%
cover
Pressure
1007hPa
daily average
The temperature ranged from 23.3°C around 04:00 to 30.7°C around 16:00. Rain was recorded across 7 hours, from around 10:00 to 16:00 (7.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
19th percentile
Low temperature
56th percentile
Rainfall
90th percentile
Wind
66th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 27.9°C, versus 25.7°C on this specific day.
Sun & daylight
Sunrise
06:44
Sunset
20:22
Day length
13h 38m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 24.7°C | 22.4°C | 0 | 9.5 | SE | 82 | 1007 |
| 01:00 | 06:00 | 25°C | 22.8°C | 0.02 | 9.3 | SE | 80 | 1007 |
| 02:00 | 07:00 | 25.8°C | 24.3°C | 0.02 | 8.3 | SE | 77 | 1006 |
| 03:00 | 08:00 | 24.8°C | 24.5°C | 0.02 | 5.9 | SSE | 77 | 1007 |
| 04:00 | 09:00 | 23.3°C | 23.1°C | 0.03 | 5.6 | SSE | 82 | 1007 |
| 05:00 | 10:00 | 23.7°C | 24.9°C | 0 | 3.1 | E | 77 | 1007 |
| 06:00 | 11:00 | 23.5°C | 24.5°C | 0 | 3.3 | E | 78 | 1008 |
| 07:00 | 12:00 | 23.3°C | 24.4°C | 0 | 3.3 | SE | 79 | 1008 |
| 08:00 | 13:00 | 24°C | 25.1°C | 0 | 3.6 | SSE | 77 | 1009 |
| 09:00 | 14:00 | 25°C | 25.7°C | 0.09 | 4.2 | S | 74 | 1008 |
| 10:00 | 15:00 | 26.5°C | 27.4°C | 0.29 | 4.4 | S | 69 | 1008 |
| 11:00 | 16:00 | 26°C | 27.2°C | 0.39 | 4.2 | S | 74 | 1009 |
| 12:00 | 17:00 | 27.2°C | 30.1°C | 0.57 | 2.7 | SSE | 73 | 1009 |
| 13:00 | 18:00 | 28.2°C | 30.9°C | 0.34 | 2.9 | SE | 69 | 1009 |
| 14:00 | 19:00 | 29.4°C | 32.1°C | 3.1 | 2.9 | E | 65 | 1008 |
| 15:00 | 20:00 | 30.7°C | 32.4°C | 2.33 | 4.8 | E | 62 | 1009 |
| 16:00 | 21:00 | 30.7°C | 31.9°C | 0.21 | 5.2 | E | 60 | 1007 |
| 17:00 | 22:00 | 25.1°C | 27.8°C | 0.01 | 2 | NNE | 77 | 1005 |
| 18:00 | 23:00 | 25.7°C | 26°C | 0 | 4.9 | NE | 71 | 1004 |
| 19:00 | 00:00 | 25.7°C | 26.1°C | 0.01 | 4.9 | ENE | 72 | 1005 |
| 20:00 | 01:00 | 25.8°C | 25.8°C | 0 | 5.8 | E | 74 | 1006 |
| 21:00 | 02:00 | 25.2°C | 25.7°C | 0.02 | 5.3 | E | 78 | 1005 |
| 22:00 | 03:00 | 23.7°C | 25.5°C | 0 | 3.5 | E | 85 | 1007 |
| 23:00 | 04:00 | 23.5°C | 25°C | 0 | 3.7 | ENE | 85 | 1007 |
Nearby cities
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Data source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for United States
- Location
- Cotulla — 28.500°, -99.250°, ERA5 grid cell center, 7.2 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 18 May 2021 specifically — not a monthly average. See the Cotulla climate overview for typical conditions.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-21). Historical climate data for Cotulla, United States (28.50°N, 99.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Cotulla, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Cotulla, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Cotulla, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.