Home / Commack / 1 October 2021
Commack
United States · 1 October 2021
← 30 September 20212 October 2021 →
Average
16.1°C
low 12.9°C · high 18.9°C
Rainfall
0mm
dry day
Wind
3.8m/s
daily average
Humidity
61.9%
daily average
Cloud
8%
cover
Pressure
1023hPa
daily average
The temperature ranged from 12.9°C around 07:00 to 18.9°C around 17:00. 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
33th percentile
Low temperature
7th percentile
Rainfall
43th 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 18.3°C, versus 16.1°C on this specific day.
Sun & daylight
Sunrise
06:49
Sunset
18:34
Day length
11h 45m
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 | 04:00 | 15°C | 11.2°C | 0 | 5.1 | NNW | 67 | 1022 |
| 01:00 | 05:00 | 14.6°C | 10.8°C | 0 | 5.1 | NNW | 67 | 1022 |
| 02:00 | 06:00 | 14.7°C | 10.9°C | 0 | 5 | NNW | 68 | 1022 |
| 03:00 | 07:00 | 14.5°C | 10.9°C | 0 | 4.9 | NNW | 70 | 1022 |
| 04:00 | 08:00 | 14.1°C | 10.7°C | 0 | 4.7 | NNW | 72 | 1022 |
| 05:00 | 09:00 | 13.7°C | 10.2°C | 0 | 4.7 | NNW | 74 | 1022 |
| 06:00 | 10:00 | 12.9°C | 9.6°C | 0 | 4.4 | NNW | 77 | 1023 |
| 07:00 | 11:00 | 12.9°C | 9.8°C | 0 | 4.1 | NNW | 77 | 1023 |
| 08:00 | 12:00 | 13.3°C | 10.4°C | 0 | 3.8 | NNW | 75 | 1024 |
| 09:00 | 13:00 | 14.1°C | 11.5°C | 0 | 3.5 | NNW | 73 | 1024 |
| 10:00 | 14:00 | 14.9°C | 12.6°C | 0 | 3.1 | NW | 69 | 1025 |
| 11:00 | 15:00 | 16.2°C | 14°C | 0 | 2.9 | NW | 62 | 1024 |
| 12:00 | 16:00 | 16.9°C | 14.4°C | 0 | 3 | NW | 57 | 1024 |
| 13:00 | 17:00 | 17.4°C | 14.5°C | 0 | 3.5 | WNW | 53 | 1024 |
| 14:00 | 18:00 | 18°C | 14.8°C | 0 | 3.8 | WNW | 50 | 1023 |
| 15:00 | 19:00 | 18.4°C | 15.1°C | 0 | 3.9 | WNW | 48 | 1022 |
| 16:00 | 20:00 | 18.7°C | 15.4°C | 0 | 3.8 | WNW | 47 | 1022 |
| 17:00 | 21:00 | 18.9°C | 15.6°C | 0 | 3.8 | WNW | 46 | 1022 |
| 18:00 | 22:00 | 18.5°C | 15.5°C | 0 | 3.3 | WNW | 47 | 1022 |
| 19:00 | 23:00 | 18.2°C | 15.7°C | 0 | 2.8 | W | 51 | 1023 |
| 20:00 | 00:00 | 17.9°C | 15.6°C | 0 | 2.7 | W | 54 | 1023 |
| 21:00 | 01:00 | 17.7°C | 15.3°C | 0 | 2.9 | W | 57 | 1023 |
| 22:00 | 02:00 | 17.6°C | 15.4°C | 0 | 3.1 | W | 60 | 1023 |
| 23:00 | 03:00 | 17.2°C | 15.2°C | 0 | 3.1 | W | 65 | 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
- Commack — 40.750°, -73.250°, ERA5 grid cell center, 10.9 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 1 October 2021 specifically — not a monthly average. See the Commack 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 Commack, United States (40.75°N, 73.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Commack, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Commack, 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 Commack, 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.