Home / Harvard / 10 September 2017
Harvard
United States · 10 September 2017
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Average
14.1°C
low 7.3°C · high 20.1°C
Rainfall
0mm
dry day
Wind
2.6m/s
daily average
Humidity
73.2%
daily average
Cloud
0%
cover
Pressure
1029hPa
daily average
The temperature ranged from 7.3°C around 06:00 to 20.1°C around 14:00. 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
17th percentile
Low temperature
4th percentile
Rainfall
52th percentile
Wind
38th 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 19.4°C, versus 14.1°C on this specific day.
Sun & daylight
Sunrise
06:28
Sunset
19:12
Day length
12h 43m
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 | 11.5°C | 9.6°C | 0 | 2.7 | E | 88 | 1029 |
| 01:00 | 06:00 | 11°C | 9.2°C | 0 | 2.3 | E | 89 | 1029 |
| 02:00 | 07:00 | 10.7°C | 9.2°C | 0 | 1.9 | ESE | 91 | 1029 |
| 03:00 | 08:00 | 10.4°C | 8.9°C | 0 | 1.9 | SE | 90 | 1029 |
| 04:00 | 09:00 | 10°C | 8.1°C | 0 | 2 | SSE | 88 | 1029 |
| 05:00 | 10:00 | 7.7°C | 5.1°C | 0 | 2.7 | SSE | 96 | 1030 |
| 06:00 | 11:00 | 7.3°C | 4.6°C | 0 | 2.6 | SSE | 95 | 1031 |
| 07:00 | 12:00 | 7.8°C | 5.3°C | 0 | 2.5 | SSE | 91 | 1031 |
| 08:00 | 13:00 | 10.2°C | 8.1°C | 0 | 2.4 | SSE | 89 | 1031 |
| 09:00 | 14:00 | 13.2°C | 11.9°C | 0 | 2.1 | SSE | 83 | 1032 |
| 10:00 | 15:00 | 17.3°C | 15.2°C | 0 | 2.2 | SSE | 53 | 1032 |
| 11:00 | 16:00 | 18.6°C | 16.2°C | 0 | 2.9 | SE | 52 | 1031 |
| 12:00 | 17:00 | 19.5°C | 16.9°C | 0 | 3.3 | SE | 49 | 1030 |
| 13:00 | 18:00 | 20°C | 17.5°C | 0 | 3.2 | SE | 49 | 1030 |
| 14:00 | 19:00 | 20.1°C | 17.8°C | 0 | 2.9 | ESE | 47 | 1029 |
| 15:00 | 20:00 | 20.1°C | 17.7°C | 0 | 2.9 | ESE | 47 | 1029 |
| 16:00 | 21:00 | 20.1°C | 17.4°C | 0 | 3.2 | ESE | 46 | 1028 |
| 17:00 | 22:00 | 18.9°C | 16.9°C | 0 | 3.1 | ESE | 59 | 1028 |
| 18:00 | 23:00 | 17.9°C | 15.9°C | 0 | 3 | ESE | 62 | 1028 |
| 19:00 | 00:00 | 16.5°C | 14.3°C | 0 | 3 | E | 63 | 1028 |
| 20:00 | 01:00 | 14.6°C | 12.1°C | 0 | 3.1 | ESE | 67 | 1028 |
| 21:00 | 02:00 | 13°C | 10.8°C | 0 | 2.7 | ESE | 75 | 1028 |
| 22:00 | 03:00 | 10.7°C | 9.1°C | 0 | 2.3 | E | 95 | 1028 |
| 23:00 | 04:00 | 10.2°C | 8.8°C | 0 | 1.9 | E | 96 | 1028 |
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
- Harvard — 42.500°, -88.500°, ERA5 grid cell center, 12.7 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 10 September 2017 specifically — not a monthly average. See the Harvard 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 (2026-07-20). Historical climate data for Harvard, United States (42.50°N, 88.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Harvard, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Harvard, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Harvard, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.