Cotulla
United States · 9 May 2021
Average
30.3°C
low 24.9°C · high 36.7°C
Rainfall
0mm
dry day
Wind
3.7m/s
daily average
Humidity
57.7%
daily average
Cloud
13%
cover
Pressure
1007hPa
daily average
The temperature ranged from 24.9°C around 05:00 to 36.7°C around 19:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
87th percentile
Low temperature
88th percentile
Rainfall
36th percentile
Wind
36th 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 26.7°C, versus 30.3°C on this specific day.
Sun & daylight
Sunrise
06:49
Sunset
20:17
Day length
13h 27m
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 | 27.1°C | 25.9°C | 0 | 7.3 | SE | 67 | 1008 |
| 01:00 | 06:00 | 26.9°C | 25.8°C | 0 | 7.1 | SE | 67 | 1008 |
| 02:00 | 07:00 | 26.7°C | 25.6°C | 0 | 6.8 | SSE | 67 | 1007 |
| 03:00 | 08:00 | 26.5°C | 25.7°C | 0 | 6.3 | SSE | 67 | 1007 |
| 04:00 | 09:00 | 25°C | 24.6°C | 0 | 5.5 | SSE | 72 | 1006 |
| 05:00 | 10:00 | 24.9°C | 26.1°C | 0 | 3.5 | SE | 74 | 1007 |
| 06:00 | 11:00 | 25°C | 25.6°C | 0 | 4.4 | SSE | 74 | 1007 |
| 07:00 | 12:00 | 24.9°C | 25.3°C | 0 | 4.8 | SSE | 76 | 1007 |
| 08:00 | 13:00 | 25.7°C | 26.5°C | 0 | 4.4 | SSE | 73 | 1007 |
| 09:00 | 14:00 | 26.6°C | 27.1°C | 0 | 4.9 | SSE | 69 | 1008 |
| 10:00 | 15:00 | 29.2°C | 30.3°C | 0 | 4.1 | SSE | 59 | 1008 |
| 11:00 | 16:00 | 30.6°C | 32.5°C | 0 | 3.1 | S | 56 | 1008 |
| 12:00 | 17:00 | 32°C | 34.5°C | 0 | 2.4 | S | 52 | 1008 |
| 13:00 | 18:00 | 32.9°C | 36.2°C | 0 | 1.3 | SSW | 51 | 1007 |
| 14:00 | 19:00 | 33.6°C | 37.8°C | 0 | 0.2 | W | 49 | 1007 |
| 15:00 | 20:00 | 34.9°C | 38.8°C | 0 | 0.9 | NNE | 46 | 1006 |
| 16:00 | 21:00 | 35.4°C | 38.9°C | 0 | 1.4 | NE | 45 | 1005 |
| 17:00 | 22:00 | 36.1°C | 38.8°C | 0 | 2.1 | N | 41 | 1004 |
| 18:00 | 23:00 | 36.4°C | 38.8°C | 0 | 2.3 | NNE | 40 | 1004 |
| 19:00 | 00:00 | 36.7°C | 38.7°C | 0 | 2.4 | NE | 37 | 1004 |
| 20:00 | 01:00 | 35.5°C | 38.1°C | 0 | 1.8 | ENE | 42 | 1005 |
| 21:00 | 02:00 | 32.8°C | 34.8°C | 0 | 2.7 | E | 48 | 1005 |
| 22:00 | 03:00 | 31.7°C | 33.1°C | 0 | 3.9 | ESE | 53 | 1006 |
| 23:00 | 04:00 | 30.6°C | 31.8°C | 0 | 4.7 | ESE | 59 | 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 9 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 (2026-07-18). 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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Cotulla, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 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 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.