Home / Berkeley / 12 September 2017
Berkeley
United States · 12 September 2017
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Average
19.4°C
low 14.4° · high 25.6°
Rainfall
0.8mm
dry day
Wind
3.7m/s
daily average
Humidity
60.9%
daily average
Cloud
95%
cover
Pressure
1011hPa
daily average
The temperature ranged from 14.4°C around 07:00 to 25.6°C around 16:00. Rain was recorded across 3 hours, from around 16:00 to 20:00 (0.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
19th percentile
Low temperature
27th percentile
Rainfall
76th percentile
Wind
90th 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 19.4°C on this specific day.
Sun & daylight
Sunrise
06:40
Sunset
19:13
Day length
12h 33m
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 | 17.2 | 14.6 | 0 | 3.3 | NNE | 58 | 1016 |
| 01:00 | 06:00 | 17.3 | 14.9 | 0 | 3.3 | NE | 59 | 1016 |
| 02:00 | 07:00 | 17.2 | 14.8 | 0 | 3.4 | NNE | 61 | 1015 |
| 03:00 | 08:00 | 16.4 | 13.9 | 0 | 3.5 | NNE | 64 | 1014 |
| 04:00 | 09:00 | 16.5 | 14 | 0 | 3.6 | NNE | 64 | 1014 |
| 05:00 | 10:00 | 14.6 | 12.1 | 0 | 3.9 | NNE | 77 | 1014 |
| 06:00 | 11:00 | 14.7 | 12.3 | 0 | 3.8 | NNE | 76 | 1013 |
| 07:00 | 12:00 | 14.4 | 11.7 | 0 | 4.1 | NNE | 76 | 1013 |
| 08:00 | 13:00 | 15 | 12.6 | 0 | 3.8 | NNE | 76 | 1013 |
| 09:00 | 14:00 | 16.2 | 13.3 | 0 | 4.7 | NNE | 73 | 1013 |
| 10:00 | 15:00 | 18.3 | 14.7 | 0 | 5.3 | NNE | 60 | 1013 |
| 11:00 | 16:00 | 20.4 | 16.9 | 0 | 5.3 | NNE | 53 | 1012 |
| 12:00 | 17:00 | 22.4 | 18.6 | 0 | 5.3 | NNE | 44 | 1011 |
| 13:00 | 18:00 | 23.8 | 20 | 0 | 5.2 | NNE | 39 | 1011 |
| 14:00 | 19:00 | 25.2 | 21.5 | 0 | 5.3 | NNE | 39 | 1010 |
| 15:00 | 20:00 | 25.3 | 21.9 | 0.04 | 5.1 | NNE | 39 | 1009 |
| 16:00 | 21:00 | 25.6 | 22.1 | 0.21 | 5 | NNE | 37 | 1008 |
| 17:00 | 22:00 | 23.4 | 22.2 | 0.17 | 2.9 | NNE | 52 | 1007 |
| 18:00 | 23:00 | 22.9 | 22.5 | 0 | 1.8 | NE | 53 | 1008 |
| 19:00 | 00:00 | 21.3 | 21.2 | 0.06 | 1.7 | ENE | 61 | 1009 |
| 20:00 | 01:00 | 19.6 | 20 | 0.27 | 1.4 | NNE | 71 | 1009 |
| 21:00 | 02:00 | 19.6 | 19.6 | 0.03 | 2.1 | N | 73 | 1008 |
| 22:00 | 03:00 | 18.8 | 18.5 | 0 | 2.6 | NNE | 78 | 1008 |
| 23:00 | 04:00 | 18.8 | 18.3 | 0 | 3 | NNE | 78 | 1008 |
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 12 September 2017 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 (2026-07-18). 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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Berkeley, 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 Berkeley, 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.