Home / Needham / 4 September 2020
Needham
United States · 4 September 2020
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Average
23.4°C
low 18.8°C · high 29.7°C
Rainfall
1.1mm
rain recorded
Wind
3.2m/s
daily average
Humidity
64%
daily average
Cloud
20%
cover
Pressure
1010hPa
daily average
The temperature ranged from 18.8°C around 23:00 to 29.7°C around 15:00. Rain was recorded across 3 hours, from around 01:00 to 03:00 (1.1mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
87th percentile
Low temperature
78th percentile
Rainfall
72th percentile
Wind
67th 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 20.3°C, versus 23.4°C on this specific day.
Sun & daylight
Sunrise
06:13
Sunset
19:12
Day length
12h 59m
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 | 21°C | 21.3°C | 0 | 2.9 | SW | 77 | 1007 |
| 01:00 | 05:00 | 20.9°C | 20.6°C | 0.18 | 3.8 | SW | 77 | 1007 |
| 02:00 | 06:00 | 20.7°C | 21.4°C | 0.61 | 3.1 | SW | 85 | 1007 |
| 03:00 | 07:00 | 20°C | 20.9°C | 0.3 | 2.8 | SSW | 89 | 1007 |
| 04:00 | 08:00 | 19.7°C | 21°C | 0.01 | 2.4 | SW | 92 | 1007 |
| 05:00 | 09:00 | 19.3°C | 20.7°C | 0 | 2.4 | SW | 97 | 1007 |
| 06:00 | 10:00 | 19.4°C | 20.2°C | 0 | 2.7 | WSW | 91 | 1008 |
| 07:00 | 11:00 | 19.4°C | 20.4°C | 0 | 2.6 | WSW | 92 | 1008 |
| 08:00 | 12:00 | 21.2°C | 23°C | 0 | 2.2 | W | 88 | 1009 |
| 09:00 | 13:00 | 23.2°C | 25.3°C | 0 | 2.4 | W | 82 | 1009 |
| 10:00 | 14:00 | 25.7°C | 26.9°C | 0 | 2.9 | WNW | 67 | 1010 |
| 11:00 | 15:00 | 27.6°C | 28.2°C | 0 | 2.9 | WNW | 55 | 1010 |
| 12:00 | 16:00 | 28.1°C | 28.6°C | 0 | 3.2 | WNW | 53 | 1010 |
| 13:00 | 17:00 | 29°C | 28.4°C | 0 | 3.4 | W | 44 | 1010 |
| 14:00 | 18:00 | 29.5°C | 28.5°C | 0 | 3.7 | W | 41 | 1010 |
| 15:00 | 19:00 | 29.7°C | 28.2°C | 0 | 3.8 | W | 38 | 1010 |
| 16:00 | 20:00 | 29°C | 26.5°C | 0 | 4.1 | W | 33 | 1010 |
| 17:00 | 21:00 | 28.3°C | 26°C | 0 | 3.6 | W | 34 | 1011 |
| 18:00 | 22:00 | 25.7°C | 24.2°C | 0 | 3.5 | W | 46 | 1012 |
| 19:00 | 23:00 | 23.6°C | 21.7°C | 0 | 3.5 | WNW | 47 | 1012 |
| 20:00 | 00:00 | 21.5°C | 19.1°C | 0 | 3.5 | WNW | 48 | 1013 |
| 21:00 | 01:00 | 20.6°C | 17.9°C | 0 | 3.5 | WNW | 47 | 1014 |
| 22:00 | 02:00 | 19.6°C | 17.1°C | 0 | 3.6 | WNW | 54 | 1015 |
| 23:00 | 03:00 | 18.8°C | 16.5°C | 0 | 3.6 | WNW | 58 | 1016 |
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
- Needham — 42.250°, -71.250°, ERA5 grid cell center, 4.0 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 4 September 2020 specifically — not a monthly average. See the Needham 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 (2026-07-21). Historical climate data for Needham, United States (42.25°N, 71.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Needham, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Needham, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Needham, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.