Home / Berkeley / 15 September 2018
Berkeley
United States · 15 September 2018
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Average
25.8°C
low 19.2°C · high 32.1°C
Rainfall
0mm
dry day
Wind
2.1m/s
daily average
Humidity
64.5%
daily average
Cloud
4%
cover
Pressure
1018hPa
daily average
The temperature ranged from 19.2°C around 07:00 to 32.1°C around 15:00. 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
88th percentile
Low temperature
68th percentile
Rainfall
50th percentile
Wind
43th 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 22.4°C, versus 25.8°C on this specific day.
Sun & daylight
Sunrise
06:42
Sunset
19:09
Day length
12h 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 | 23.2°C | 25.5°C | 0 | 1.3 | NNW | 78 | 1018 |
| 01:00 | 06:00 | 23°C | 25.1°C | 0 | 1.4 | NNW | 78 | 1018 |
| 02:00 | 07:00 | 22.4°C | 24.4°C | 0 | 1.5 | N | 79 | 1018 |
| 03:00 | 08:00 | 21.9°C | 23.6°C | 0 | 1.7 | NNE | 81 | 1018 |
| 04:00 | 09:00 | 21.9°C | 23.5°C | 0 | 1.8 | NNE | 80 | 1018 |
| 05:00 | 10:00 | 19.5°C | 21.3°C | 0 | 1.3 | NNE | 91 | 1018 |
| 06:00 | 11:00 | 19.3°C | 21°C | 0 | 1.4 | NNE | 90 | 1019 |
| 07:00 | 12:00 | 19.2°C | 20.6°C | 0 | 1.5 | NE | 89 | 1019 |
| 08:00 | 13:00 | 21.3°C | 23.2°C | 0 | 1.8 | NE | 85 | 1020 |
| 09:00 | 14:00 | 23.3°C | 25.7°C | 0 | 1.3 | NE | 78 | 1020 |
| 10:00 | 15:00 | 27.3°C | 29.1°C | 0 | 1.3 | ENE | 56 | 1020 |
| 11:00 | 16:00 | 29.2°C | 30.8°C | 0 | 1.7 | NE | 52 | 1020 |
| 12:00 | 17:00 | 30.9°C | 31.8°C | 0 | 2.7 | NE | 46 | 1020 |
| 13:00 | 18:00 | 31.4°C | 32°C | 0 | 3.1 | NE | 45 | 1019 |
| 14:00 | 19:00 | 31.9°C | 32.4°C | 0 | 3.5 | NE | 44 | 1019 |
| 15:00 | 20:00 | 32.1°C | 32.4°C | 0 | 3.6 | NE | 43 | 1018 |
| 16:00 | 21:00 | 32°C | 32.4°C | 0 | 3.7 | NE | 44 | 1017 |
| 17:00 | 22:00 | 31.7°C | 33°C | 0 | 2.5 | NE | 46 | 1017 |
| 18:00 | 23:00 | 31.1°C | 32.8°C | 0 | 1.9 | NNE | 47 | 1017 |
| 19:00 | 00:00 | 28.8°C | 29.8°C | 0 | 1.9 | NNE | 49 | 1017 |
| 20:00 | 01:00 | 26.3°C | 26.6°C | 0 | 2.1 | NNE | 52 | 1017 |
| 21:00 | 02:00 | 25°C | 25.1°C | 0 | 2.5 | NNE | 56 | 1017 |
| 22:00 | 03:00 | 23.6°C | 24.4°C | 0 | 2.6 | NE | 70 | 1017 |
| 23:00 | 04:00 | 23.1°C | 23.7°C | 0 | 2.8 | NE | 71 | 1017 |
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
- Berkeley — 38.750°, -90.250°, ERA5 grid cell center, 7.1 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 15 September 2018 specifically — not a monthly average. See the Berkeley 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 Berkeley, United States (38.75°N, 90.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Berkeley, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Berkeley, 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 Berkeley, 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.