Home / Dunkirk / 22 September 2021
Dunkirk
United States · 22 September 2021
← 21 September 202123 September 2021 →
Average
13.4°C
low 12.5° · high 17.1°
Rainfall
69.5mm
rain recorded
Wind
7.1m/s
daily average
Humidity
89%
daily average
Cloud
100%
cover
Pressure
1014hPa
daily average
The temperature ranged from 12.5°C around 17:00 to 17.1°C around 00:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (69.5mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
3th percentile
Low temperature
30th percentile
Rainfall
100th percentile
Wind
99th 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 19.8°C, versus 13.4°C on this specific day.
Sun & daylight
Sunrise
07:28
Sunset
19:37
Day length
12h 9m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Indiana/Indianapolis.
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 | 17.1 | 14.5 | 2.93 | 6.3 | NW | 92 | 1016 |
| 01:00 | 05:00 | 16.2 | 12.7 | 1.8 | 7 | NNW | 90 | 1016 |
| 02:00 | 06:00 | 16.3 | 12.6 | 1.71 | 7.7 | N | 93 | 1015 |
| 03:00 | 07:00 | 15.9 | 10.7 | 3.94 | 9.4 | N | 92 | 1014 |
| 04:00 | 08:00 | 14.4 | 9 | 4.5 | 8.8 | N | 90 | 1014 |
| 05:00 | 09:00 | 13.5 | 9 | 6.65 | 7.2 | N | 89 | 1015 |
| 06:00 | 10:00 | 12.7 | 10 | 5.31 | 4.1 | NNW | 87 | 1017 |
| 07:00 | 11:00 | 12.7 | 9.3 | 3.33 | 5.3 | N | 88 | 1016 |
| 08:00 | 12:00 | 12.7 | 8.8 | 2.62 | 6.1 | N | 89 | 1015 |
| 09:00 | 13:00 | 12.5 | 8.9 | 2.11 | 5.5 | N | 90 | 1014 |
| 10:00 | 14:00 | 12.6 | 8.6 | 1.34 | 6.2 | N | 90 | 1015 |
| 11:00 | 15:00 | 12.8 | 8.3 | 1.63 | 7 | N | 89 | 1015 |
| 12:00 | 16:00 | 12.8 | 7.8 | 1.62 | 7.8 | N | 90 | 1014 |
| 13:00 | 17:00 | 12.7 | 7.4 | 1.68 | 8.1 | N | 91 | 1013 |
| 14:00 | 18:00 | 13 | 7.5 | 1.68 | 8.6 | N | 91 | 1013 |
| 15:00 | 19:00 | 12.8 | 7.8 | 0.64 | 7.9 | N | 92 | 1012 |
| 16:00 | 20:00 | 12.8 | 8.3 | 2.83 | 7.1 | NNW | 92 | 1012 |
| 17:00 | 21:00 | 12.5 | 7.7 | 3.26 | 7.1 | NNW | 88 | 1013 |
| 18:00 | 22:00 | 12.6 | 8.1 | 3.34 | 6.7 | NW | 87 | 1013 |
| 19:00 | 23:00 | 12.6 | 7.5 | 3.47 | 7.5 | NW | 86 | 1013 |
| 20:00 | 00:00 | 12.8 | 7.6 | 3.52 | 7.6 | NNW | 85 | 1014 |
| 21:00 | 01:00 | 12.9 | 8 | 3.48 | 7.2 | NNW | 85 | 1014 |
| 22:00 | 02:00 | 12.8 | 8.1 | 3.22 | 6.9 | NNW | 84 | 1014 |
| 23:00 | 03:00 | 12.5 | 7.6 | 2.93 | 7 | NW | 84 | 1013 |
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
- Dunkirk — 40.500°, -85.250°, ERA5 grid cell center, 14.3 km from requested point
- Time zone
- America/Indiana/Indianapolis
- What's shown here
- The hourly and daily record for 22 September 2021 specifically — not a monthly average. See the Dunkirk 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 (2026-07-17). Historical climate data for Dunkirk, United States (40.50°N, 85.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Dunkirk, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Dunkirk, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Dunkirk, 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/}
}Notice something wrong with this data? Report a data issue.