Home / Berkeley / 7 September 2021
Berkeley
United States · 7 September 2021
← 6 September 20218 September 2021 →
Average
25°C
low 17.9° · high 31.7°
Rainfall
1.2mm
rain recorded
Wind
3.9m/s
daily average
Humidity
65%
daily average
Cloud
52%
cover
Pressure
1011hPa
daily average
The temperature ranged from 17.9°C around 07:00 to 31.7°C around 17:00. Rain was recorded across 3 hours, from around 20:00 to 23:00 (1.2mm total).
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
58th percentile
Rainfall
78th percentile
Wind
93th 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 22.2°C, versus 25°C on this specific day.
Sun & daylight
Sunrise
06:35
Sunset
19:21
Day length
12h 46m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 21.3 | 21.1 | 0 | 3.4 | SSW | 75 | 1014 |
| 01:00 | 06:00 | 20.5 | 20.2 | 0 | 3.3 | SSW | 76 | 1014 |
| 02:00 | 07:00 | 20.6 | 20.4 | 0 | 3.2 | SSW | 76 | 1013 |
| 03:00 | 08:00 | 20 | 19.7 | 0 | 3.1 | SSW | 76 | 1013 |
| 04:00 | 09:00 | 19.2 | 18.7 | 0 | 3.1 | SSW | 76 | 1013 |
| 05:00 | 10:00 | 18.1 | 17.3 | 0 | 3.5 | SSW | 82 | 1013 |
| 06:00 | 11:00 | 18.2 | 17.2 | 0 | 3.7 | SSW | 82 | 1013 |
| 07:00 | 12:00 | 17.9 | 16.8 | 0 | 3.9 | SSW | 84 | 1013 |
| 08:00 | 13:00 | 19.6 | 18.8 | 0 | 3.9 | SSW | 80 | 1013 |
| 09:00 | 14:00 | 22.4 | 22.1 | 0 | 3.6 | SSW | 70 | 1013 |
| 10:00 | 15:00 | 25.9 | 25.5 | 0 | 3.9 | SSW | 58 | 1013 |
| 11:00 | 16:00 | 27.6 | 27.1 | 0 | 4.4 | SSW | 55 | 1013 |
| 12:00 | 17:00 | 29.4 | 28.7 | 0 | 4.9 | SSW | 50 | 1012 |
| 13:00 | 18:00 | 30.2 | 29.3 | 0 | 5.4 | SSW | 48 | 1011 |
| 14:00 | 19:00 | 30.9 | 29.8 | 0 | 5.5 | SSW | 46 | 1010 |
| 15:00 | 20:00 | 31.3 | 30.1 | 0 | 5.8 | SSW | 46 | 1009 |
| 16:00 | 21:00 | 31.6 | 30.3 | 0 | 6.1 | SSW | 45 | 1008 |
| 17:00 | 22:00 | 31.7 | 30.8 | 0 | 5.1 | SW | 43 | 1008 |
| 18:00 | 23:00 | 31.4 | 30.7 | 0 | 4.7 | SSW | 44 | 1007 |
| 19:00 | 00:00 | 29.5 | 30.3 | 0.03 | 3.6 | WSW | 54 | 1008 |
| 20:00 | 01:00 | 27.9 | 30 | 0.28 | 2 | WSW | 61 | 1008 |
| 21:00 | 02:00 | 26.6 | 28.8 | 0.01 | 2.7 | W | 71 | 1009 |
| 22:00 | 03:00 | 24.9 | 27.1 | 0.3 | 2.7 | W | 78 | 1009 |
| 23:00 | 04:00 | 24.3 | 27.1 | 0.55 | 2.2 | WNW | 84 | 1010 |
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 7 September 2021 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 (2026-07-17). 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 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Berkeley, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 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 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.