Home / Berkeley / 4 September 2020
Berkeley
United States · 4 September 2020
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Average
21.1°C
low 14.3°C · high 26.2°C
Rainfall
0mm
dry day
Wind
1.7m/s
daily average
Humidity
52.7%
daily average
Cloud
52%
cover
Pressure
1021hPa
daily average
The temperature ranged from 14.3°C around 07:00 to 26.2°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
28th percentile
Low temperature
23th percentile
Rainfall
50th percentile
Wind
27th 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 22.6°C, versus 21.1°C on this specific day.
Sun & daylight
Sunrise
06:33
Sunset
19:25
Day length
12h 52m
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 | 22.5°C | 20.2°C | 0 | 3.8 | N | 50 | 1016 |
| 01:00 | 06:00 | 21.1°C | 18.8°C | 0 | 3.4 | N | 51 | 1017 |
| 02:00 | 07:00 | 20°C | 17.9°C | 0 | 3 | N | 52 | 1018 |
| 03:00 | 08:00 | 19.3°C | 17.5°C | 0 | 2.7 | N | 57 | 1018 |
| 04:00 | 09:00 | 18.3°C | 16.6°C | 0 | 2.4 | N | 57 | 1019 |
| 05:00 | 10:00 | 14.8°C | 13.4°C | 0 | 1.7 | NNE | 68 | 1020 |
| 06:00 | 11:00 | 14.7°C | 13.3°C | 0 | 1.8 | NNE | 70 | 1020 |
| 07:00 | 12:00 | 14.3°C | 13.2°C | 0 | 1.5 | NNE | 73 | 1021 |
| 08:00 | 13:00 | 16°C | 15.5°C | 0 | 1.1 | NE | 73 | 1021 |
| 09:00 | 14:00 | 18.8°C | 18.3°C | 0 | 1.2 | NNE | 62 | 1022 |
| 10:00 | 15:00 | 21.7°C | 20.8°C | 0 | 1 | NNE | 44 | 1023 |
| 11:00 | 16:00 | 22.7°C | 21.8°C | 0 | 1.3 | NNE | 44 | 1023 |
| 12:00 | 17:00 | 23.9°C | 22.8°C | 0 | 1.6 | N | 41 | 1023 |
| 13:00 | 18:00 | 24.6°C | 23.7°C | 0 | 1.6 | NNW | 41 | 1023 |
| 14:00 | 19:00 | 25.3°C | 24.4°C | 0 | 1.9 | NNW | 42 | 1023 |
| 15:00 | 20:00 | 25.7°C | 25°C | 0 | 1.8 | NW | 42 | 1022 |
| 16:00 | 21:00 | 26.2°C | 25.4°C | 0 | 1.5 | NW | 39 | 1022 |
| 17:00 | 22:00 | 25.8°C | 25.7°C | 0 | 0.9 | NW | 42 | 1021 |
| 18:00 | 23:00 | 25.9°C | 25.9°C | 0 | 0.4 | NW | 39 | 1022 |
| 19:00 | 00:00 | 25.5°C | 24.7°C | 0 | 0.5 | ENE | 33 | 1022 |
| 20:00 | 01:00 | 23.7°C | 22.3°C | 0 | 1.3 | E | 37 | 1022 |
| 21:00 | 02:00 | 20.4°C | 19.7°C | 0 | 1.6 | ESE | 56 | 1023 |
| 22:00 | 03:00 | 17.5°C | 17.4°C | 0 | 1.6 | SE | 75 | 1024 |
| 23:00 | 04:00 | 16.9°C | 16.6°C | 0 | 1.7 | SE | 77 | 1024 |
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 4 September 2020 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.