Home / Harvard / 11 September 2017
Harvard
United States · 11 September 2017
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Average
15°C
low 6.9°C · high 22.6°C
Rainfall
0mm
dry day
Wind
1.4m/s
daily average
Humidity
73.9%
daily average
Cloud
23%
cover
Pressure
1024hPa
daily average
The temperature ranged from 6.9°C around 05:00 to 22.6°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
30th percentile
Low temperature
3th percentile
Rainfall
53th percentile
Wind
1th 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 19.3°C, versus 15°C on this specific day.
Sun & daylight
Sunrise
06:29
Sunset
19:10
Day length
12h 40m
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 | 9.7°C | 8.2°C | 0 | 2 | ESE | 96 | 1027 |
| 01:00 | 06:00 | 9.8°C | 7.9°C | 0 | 2.3 | ESE | 95 | 1027 |
| 02:00 | 07:00 | 10.2°C | 8.5°C | 0 | 2.1 | SE | 92 | 1026 |
| 03:00 | 08:00 | 10.3°C | 8.7°C | 0 | 1.9 | SSE | 90 | 1026 |
| 04:00 | 09:00 | 9.6°C | 7.6°C | 0 | 2.1 | SSE | 90 | 1026 |
| 05:00 | 10:00 | 6.9°C | 4.8°C | 0 | 1.8 | SSE | 97 | 1026 |
| 06:00 | 11:00 | 7°C | 4.9°C | 0 | 1.8 | SSE | 95 | 1026 |
| 07:00 | 12:00 | 7.5°C | 5°C | 0 | 2.4 | S | 94 | 1027 |
| 08:00 | 13:00 | 10.4°C | 9.1°C | 0 | 1.6 | S | 92 | 1027 |
| 09:00 | 14:00 | 13.7°C | 13.2°C | 0 | 1.2 | S | 85 | 1026 |
| 10:00 | 15:00 | 17.8°C | 17.1°C | 0 | 0.6 | SW | 56 | 1026 |
| 11:00 | 16:00 | 19.4°C | 18.7°C | 0 | 0.8 | SSW | 52 | 1025 |
| 12:00 | 17:00 | 20.7°C | 20.1°C | 0 | 0.7 | SSW | 49 | 1025 |
| 13:00 | 18:00 | 21.6°C | 21.3°C | 0 | 0.4 | SW | 48 | 1024 |
| 14:00 | 19:00 | 22.1°C | 22°C | 0 | 0.3 | S | 47 | 1023 |
| 15:00 | 20:00 | 22.5°C | 21.7°C | 0 | 1.2 | SSE | 45 | 1022 |
| 16:00 | 21:00 | 22.6°C | 22°C | 0 | 0.8 | SE | 44 | 1021 |
| 17:00 | 22:00 | 21.9°C | 22.4°C | 0 | 0.3 | NNW | 55 | 1021 |
| 18:00 | 23:00 | 21.2°C | 21.5°C | 0 | 0.5 | ENE | 56 | 1020 |
| 19:00 | 00:00 | 18.2°C | 18.1°C | 0 | 1.1 | NE | 67 | 1020 |
| 20:00 | 01:00 | 15.9°C | 14.9°C | 0 | 1.6 | ENE | 70 | 1020 |
| 21:00 | 02:00 | 15.4°C | 13.9°C | 0 | 2.3 | ESE | 72 | 1020 |
| 22:00 | 03:00 | 13.3°C | 12.7°C | 0 | 1.8 | ESE | 93 | 1020 |
| 23:00 | 04:00 | 12.5°C | 11.6°C | 0 | 1.9 | SE | 94 | 1020 |
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 11 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 (2026-07-21). 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 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Harvard, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 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 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.