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Commack

United States · 30 September 2023

CommackUnited States4:03 AM localChange location

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Average

16.4°C

low 15° · high 17.7°

Rainfall

16.2mm

rain recorded

Wind

5.7m/s

daily average

Humidity

88.3%

daily average

Cloud

89%

cover

Pressure

1021hPa

daily average

The temperature ranged from 15°C around 06:00 to 17.7°C around 17:00. Rain was recorded across 12 hours, from around 00:00 to 14:00 (16.2mm total).

How unusual was this day?

Compared against the same 135 calendar days (±7 days) across the other 9 years on file.

High temperature

11th percentile

Low temperature

25th percentile

Rainfall

94th percentile

Wind

79th 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 18.7°C, versus 16.4°C on this specific day.

Sun & daylight

Sunrise

06:48

Sunset

18:37

Day length

11h 49m

Hour by hour

Temperature (line) and hourly rainfall (bars), local time — America/New_York.

↓ Download CSV
00:0006:0012:0018:0023:00

Cumulative rainfall through the day.

00:0006:0012:0018:0023:00
Local timeUTCTemp °CFeels °CRain mmWind m/sDirHumidity %Pressure hPa
00:0004:0016.2131.316.8NE931020
01:0005:0015.812.60.496.6NE921020
02:0006:0015.712.50.116.6NNE911019
03:0007:0015.612.10.046.9NNE911019
04:0008:0015.511.90.017NNE911019
05:0009:0015.411.70.077.2NNE911019
06:0010:001512.51.45.3NNE921020
07:0011:001511.92.186.1NNE921021
08:0012:0015.211.81.96.7NNE921021
09:0013:0015.311.82.486.9NNE921022
10:0014:0015.411.82.386.9NNE921022
11:0015:0015.612.71.736NNE911022
12:0016:0015.813.31.145.5NNE901022
13:0017:0016.613.80.735.9N871022
14:0018:0017.214.40.116N831021
15:0019:0017.514.90.055.8N831021
16:0020:0017.715.305.5NNE831021
17:0021:0017.715.90.014.7NNE821021
18:0022:0017.716.80.073.6N841021
19:0023:0017.716.60.023.9NNW861021
20:0000:0017.616.703.7NNW861021
21:0001:0017.616.404.1N861021
22:0002:0017.516.204.2N861021
23:0003:0017.315.904.3NNW861021

Same date, other years

202520242022202120202019201820172016

Nearby cities

Brentwood

0km away, same day

West Babylon

0km away, same day

Central Islip

0km away, same day

West Islip

0km away, same day

Deer Park

0km away, same day

Lindenhurst

0km away, same day

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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 30 September 2023 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

Plain text
PastClimate (2026-07-17). 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/
APA
PastClimate. (2026). Historical climate data for Commack, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
MLA
"Historical Climate Data for Commack, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
BibTeX
@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 2026-07-17},
  url = {https://www.pastclimate.com/}
}

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