Home / Tomball / 22 August 2018
Tomball
United States · 22 August 2018
← 21 August 201823 August 2018 →
Average
30.9°C
low 25.4°C · high 37.3°C
Rainfall
0mm
dry day
Wind
2m/s
daily average
Humidity
59.9%
daily average
Cloud
61%
cover
Pressure
1018hPa
daily average
The temperature ranged from 25.4°C around 07:00 to 37.3°C around 16:00. 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
90th percentile
Low temperature
76th percentile
Rainfall
20th percentile
Wind
39th 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 28.7°C, versus 30.9°C on this specific day.
Sun & daylight
Sunrise
06:53
Sunset
19:55
Day length
13h 2m
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 | 28.2°C | 32.4°C | 0 | 2.1 | SSW | 77 | 1019 |
| 01:00 | 06:00 | 28.1°C | 31.7°C | 0 | 2.4 | SW | 75 | 1018 |
| 02:00 | 07:00 | 27.7°C | 31.2°C | 0 | 2.6 | SW | 76 | 1018 |
| 03:00 | 08:00 | 27.3°C | 30.9°C | 0 | 2.4 | SW | 77 | 1018 |
| 04:00 | 09:00 | 27.1°C | 30.7°C | 0 | 2.3 | WSW | 78 | 1019 |
| 05:00 | 10:00 | 25.6°C | 29.9°C | 0 | 1.5 | WNW | 87 | 1018 |
| 06:00 | 11:00 | 25.5°C | 29.3°C | 0 | 2.1 | W | 86 | 1019 |
| 07:00 | 12:00 | 25.4°C | 29.1°C | 0 | 2.1 | W | 86 | 1019 |
| 08:00 | 13:00 | 26.3°C | 30°C | 0 | 2.3 | W | 83 | 1020 |
| 09:00 | 14:00 | 28.1°C | 32°C | 0 | 2 | W | 75 | 1020 |
| 10:00 | 15:00 | 31.1°C | 33.5°C | 0 | 1.7 | WNW | 51 | 1021 |
| 11:00 | 16:00 | 32.5°C | 34.8°C | 0 | 1.7 | WNW | 47 | 1021 |
| 12:00 | 17:00 | 33.8°C | 36°C | 0 | 1.4 | WNW | 42 | 1020 |
| 13:00 | 18:00 | 34.6°C | 37.5°C | 0 | 1.1 | WNW | 42 | 1019 |
| 14:00 | 19:00 | 35.4°C | 38.6°C | 0 | 1 | WNW | 41 | 1018 |
| 15:00 | 20:00 | 36.3°C | 39.3°C | 0 | 0.8 | NNW | 38 | 1017 |
| 16:00 | 21:00 | 37.3°C | 39.1°C | 0 | 1.5 | NNE | 32 | 1017 |
| 17:00 | 22:00 | 36.4°C | 39.4°C | 0 | 1.6 | NE | 41 | 1016 |
| 18:00 | 23:00 | 35.9°C | 38.5°C | 0 | 2 | NE | 41 | 1016 |
| 19:00 | 00:00 | 35°C | 36.7°C | 0.03 | 2.5 | ENE | 41 | 1015 |
| 20:00 | 01:00 | 33.6°C | 34.8°C | 0 | 2.7 | ENE | 42 | 1016 |
| 21:00 | 02:00 | 31.9°C | 33°C | 0 | 2.9 | E | 46 | 1016 |
| 22:00 | 03:00 | 29.7°C | 32.4°C | 0 | 2.8 | SE | 64 | 1017 |
| 23:00 | 04:00 | 29.2°C | 32.8°C | 0 | 2.2 | SSE | 69 | 1018 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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
- Tomball — 30.000°, -95.500°, ERA5 grid cell center, 15.5 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 22 August 2018 specifically — not a monthly average. See the Tomball 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 (2026-07-19). Historical climate data for Tomball, United States (30.00°N, 95.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Tomball, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Tomball, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Tomball, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.