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Holbrook

United States · 30 September 2017

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Average

15.8°C

low 13.7° · high 17.7°

Rainfall

9.9mm

rain recorded

Wind

4.6m/s

daily average

Humidity

75.5%

daily average

Cloud

56%

cover

Pressure

1020hPa

daily average

The temperature ranged from 13.7°C around 22:00 to 17.7°C around 02:00. Rain was recorded across 13 hours, from around 03:00 to 21:00 (9.9mm total).

How unusual was this day?

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

High temperature

13th percentile

Low temperature

10th percentile

Rainfall

87th percentile

Wind

48th 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 18.4°C, versus 15.8°C on this specific day.

Sun & daylight

Sunrise

06:47

Sunset

18:35

Day length

11h 48m

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
00:0004:0017.315.102.8SSW581017
01:0005:0017.615.802.9SSW641017
02:0006:0017.71603SSW661017
03:0007:0016.8150.183.2WSW711017
04:0008:0016.915.30.163WSW691017
05:0009:0016.8150.073WSW701017
06:0010:0015.615.20.090.8E711017
07:0011:0015.815.10.011.3E721017
08:0012:0016.816.30.041.2E681018
09:0013:0016.416.40.080.6NE711018
10:0014:0016.816.60.051.1N721018
11:0015:001614.71.482.4N731019
12:0016:0015.513.31.064N811019
13:0017:0015.812.80.445.2NNE781020
14:0018:0016.212.30.556.5NNE791020
15:0019:0016.412.21.017.3NNE791020
16:0020:0015.310.42.468NNE811021
17:0021:0015.2100.998.3NNE801022
18:0022:0014.7100.437.6NE841023
19:0023:0014.29.60.277.3NNE851024
20:0000:0013.88.90.197.6NNE861025
21:0001:0013.88.80.187.7NE841026
22:0002:0013.78.50.077.8NE831026
23:0003:0013.88.90.077.7NE861027

Same date, other years

202520242023202220212020201920182016

Nearby cities

Coram

0km away, same day

Centereach

0km away, same day

Shirley

0km away, same day

Medford

0km away, same day

East Patchogue

0km away, same day

Selden

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
Holbrook — 40.750°, -73.000°, ERA5 grid cell center, 9.6 km from requested point
Time zone
America/New_York
What's shown here
The hourly and daily record for 30 September 2017 specifically — not a monthly average. See the Holbrook 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 Holbrook, United States (40.75°N, 73.00°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 Holbrook, 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 Holbrook, 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 Holbrook, 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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