Home / Chicopee / 29 December 2017
Chicopee
United States · 29 December 2017
← 28 December 201730 December 2017 →
Average
-15.1°C
low -18.2°C · high -11.2°C
Rainfall
0.1mm
dry day
Wind
2.3m/s
daily average
Humidity
61.6%
daily average
Cloud
48%
cover
Pressure
1025hPa
daily average
The temperature ranged from -18.2°C around 04:00 to -11.2°C around 15:00. 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
1th percentile
Low temperature
2th percentile
Rainfall
48th percentile
Wind
34th 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 0.4°C, versus -15.1°C on this specific day.
Sun & daylight
Sunrise
07:18
Sunset
16:26
Day length
9h 8m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | -17.5°C | -23.3°C | 0 | 2.9 | NNW | 58 | 1029 |
| 01:00 | 06:00 | -17.3°C | -22.7°C | 0 | 2.4 | NNW | 58 | 1028 |
| 02:00 | 07:00 | -17.5°C | -22.3°C | 0 | 1.6 | WNW | 59 | 1029 |
| 03:00 | 08:00 | -17.7°C | -22.3°C | 0 | 1.2 | WNW | 62 | 1029 |
| 04:00 | 09:00 | -18.2°C | -22°C | 0 | 0.2 | ENE | 65 | 1028 |
| 05:00 | 10:00 | -17°C | -21.6°C | 0 | 1.4 | WNW | 64 | 1027 |
| 06:00 | 11:00 | -17.2°C | -21.8°C | 0 | 1.4 | WNW | 64 | 1027 |
| 07:00 | 12:00 | -17.4°C | -21.9°C | 0.01 | 1.3 | WNW | 65 | 1027 |
| 08:00 | 13:00 | -17.4°C | -21.9°C | 0.03 | 1.2 | NW | 65 | 1026 |
| 09:00 | 14:00 | -17.5°C | -21.8°C | 0.03 | 1 | W | 71 | 1026 |
| 10:00 | 15:00 | -15.4°C | -19.9°C | 0.01 | 1.3 | W | 64 | 1026 |
| 11:00 | 16:00 | -14.3°C | -19.3°C | 0 | 2 | W | 62 | 1025 |
| 12:00 | 17:00 | -13°C | -18.4°C | 0 | 2.6 | W | 59 | 1024 |
| 13:00 | 18:00 | -12°C | -17.8°C | 0 | 3.2 | W | 57 | 1023 |
| 14:00 | 19:00 | -11.4°C | -17.6°C | 0.01 | 3.8 | WNW | 56 | 1022 |
| 15:00 | 20:00 | -11.2°C | -17.6°C | 0.01 | 4.2 | WNW | 55 | 1022 |
| 16:00 | 21:00 | -11.8°C | -17.7°C | 0 | 3.3 | WNW | 58 | 1023 |
| 17:00 | 22:00 | -13.2°C | -18.6°C | 0 | 2.7 | WNW | 63 | 1023 |
| 18:00 | 23:00 | -13.4°C | -18.6°C | 0 | 2.4 | W | 62 | 1023 |
| 19:00 | 00:00 | -13.5°C | -18.9°C | 0 | 2.7 | WNW | 60 | 1024 |
| 20:00 | 01:00 | -13.8°C | -19.3°C | 0 | 2.7 | WNW | 61 | 1024 |
| 21:00 | 02:00 | -14°C | -19.4°C | 0 | 2.6 | NW | 62 | 1023 |
| 22:00 | 03:00 | -16.1°C | -21.9°C | 0 | 3.1 | WNW | 66 | 1023 |
| 23:00 | 04:00 | -14.6°C | -20.4°C | 0 | 3 | WSW | 62 | 1023 |
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
- Chicopee — 42.250°, -72.500°, ERA5 grid cell center, 14.3 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 29 December 2017 specifically — not a monthly average. See the Chicopee 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 Chicopee, United States (42.25°N, 72.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Chicopee, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Chicopee, 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 Chicopee, 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.