Home / Accomac / 4 September 2018
Accomac
United States · 4 September 2018
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Average
28.2°C
low 26.7° · high 30.2°
Rainfall
0.4mm
dry day
Wind
2.1m/s
daily average
Humidity
80.6%
daily average
Cloud
20%
cover
Pressure
1023hPa
daily average
The temperature ranged from 26.7°C around 02:00 to 30.2°C around 17:00. Rain was recorded across 3 hours, from around 11:00 to 21:00 (0.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
99th percentile
Low temperature
100th percentile
Rainfall
64th 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 24°C, versus 28.2°C on this specific day.
Sun & daylight
Sunrise
06:35
Sunset
19:27
Day length
12h 52m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 26.8 | 30.4 | 0 | 3.7 | SSW | 88 | 1025 |
| 01:00 | 05:00 | 26.9 | 30.2 | 0 | 3.9 | SSW | 87 | 1024 |
| 02:00 | 06:00 | 26.7 | 30.3 | 0 | 3.4 | SW | 86 | 1024 |
| 03:00 | 07:00 | 26.9 | 30.7 | 0 | 3 | SW | 85 | 1023 |
| 04:00 | 08:00 | 26.8 | 30.7 | 0 | 2.8 | WSW | 84 | 1023 |
| 05:00 | 09:00 | 26.9 | 30.9 | 0 | 2.4 | WSW | 84 | 1023 |
| 06:00 | 10:00 | 27.1 | 31.8 | 0 | 1.7 | WSW | 84 | 1024 |
| 07:00 | 11:00 | 27 | 31.8 | 0 | 1.6 | WSW | 85 | 1024 |
| 08:00 | 12:00 | 27.1 | 32 | 0 | 1.7 | W | 85 | 1024 |
| 09:00 | 13:00 | 27.9 | 32.9 | 0 | 1.7 | W | 83 | 1024 |
| 10:00 | 14:00 | 28.3 | 33.3 | 0 | 2.1 | NNW | 83 | 1024 |
| 11:00 | 15:00 | 29.4 | 34.1 | 0.11 | 1.8 | N | 74 | 1024 |
| 12:00 | 16:00 | 29.7 | 34.6 | 0.11 | 1.7 | N | 74 | 1024 |
| 13:00 | 17:00 | 30 | 35.1 | 0.01 | 1.2 | N | 71 | 1024 |
| 14:00 | 18:00 | 30.2 | 35.9 | 0 | 0.5 | NNE | 71 | 1023 |
| 15:00 | 19:00 | 30.1 | 36.1 | 0.02 | 0.2 | SW | 72 | 1023 |
| 16:00 | 20:00 | 29.8 | 34.9 | 0.02 | 0.9 | SSW | 71 | 1022 |
| 17:00 | 21:00 | 30.2 | 35.5 | 0.02 | 1.1 | S | 71 | 1022 |
| 18:00 | 22:00 | 29.9 | 35.3 | 0 | 2.1 | S | 79 | 1022 |
| 19:00 | 23:00 | 29.3 | 34.6 | 0 | 2 | S | 79 | 1022 |
| 20:00 | 00:00 | 28.6 | 34.3 | 0 | 1.3 | SSE | 83 | 1022 |
| 21:00 | 01:00 | 27.5 | 31.8 | 0.15 | 2.4 | S | 83 | 1023 |
| 22:00 | 02:00 | 27.4 | 31.3 | 0 | 3 | S | 84 | 1023 |
| 23:00 | 03:00 | 27 | 31.2 | 0 | 3.2 | S | 89 | 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
- Accomac — 37.750°, -75.750°, ERA5 grid cell center, 8.2 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 4 September 2018 specifically — not a monthly average. See the Accomac 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 (2026-07-18). Historical climate data for Accomac, United States (37.75°N, 75.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Accomac, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Accomac, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Accomac, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.