Home / Willmar / 15 September 2023
Willmar
United States · 15 September 2023
← 14 September 202316 September 2023 →
Average
18.5°C
low 14.4°C · high 24°C
Rainfall
4.9mm
rain recorded
Wind
2.8m/s
daily average
Humidity
72.4%
daily average
Cloud
60%
cover
Pressure
1015hPa
daily average
The temperature ranged from 14.4°C around 22:00 to 24°C around 16:00. Rain was recorded across 7 hours, from around 00:00 to 10:00 (4.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
43th percentile
Low temperature
62th percentile
Rainfall
79th percentile
Wind
19th 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 18.6°C, versus 18.5°C on this specific day.
Sun & daylight
Sunrise
06:58
Sunset
19:31
Day length
12h 33m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 17.5°C | 16.6°C | 0.68 | 3.3 | SW | 83 | 1015 |
| 01:00 | 06:00 | 16.6°C | 15.7°C | 0.71 | 3.5 | SSW | 88 | 1015 |
| 02:00 | 07:00 | 16.9°C | 16°C | 0.06 | 3.6 | SSW | 89 | 1015 |
| 03:00 | 08:00 | 16.4°C | 15.3°C | 0 | 3.8 | SSW | 91 | 1015 |
| 04:00 | 09:00 | 16.3°C | 15.2°C | 0 | 3.8 | SW | 92 | 1015 |
| 05:00 | 10:00 | 16.6°C | 16.4°C | 0.03 | 3 | SW | 95 | 1014 |
| 06:00 | 11:00 | 16.3°C | 16.1°C | 0.26 | 3 | WSW | 97 | 1014 |
| 07:00 | 12:00 | 16.1°C | 16.7°C | 1.14 | 2.1 | W | 99 | 1015 |
| 08:00 | 13:00 | 15.8°C | 16.6°C | 1.01 | 1.7 | W | 100 | 1015 |
| 09:00 | 14:00 | 16.8°C | 17.3°C | 0.64 | 2.1 | W | 96 | 1016 |
| 10:00 | 15:00 | 18.1°C | 18.6°C | 0.3 | 2.3 | NW | 89 | 1016 |
| 11:00 | 16:00 | 19.3°C | 20°C | 0.05 | 1.5 | NW | 80 | 1016 |
| 12:00 | 17:00 | 21.1°C | 21.2°C | 0 | 1.9 | WNW | 65 | 1016 |
| 13:00 | 18:00 | 22.4°C | 21.1°C | 0 | 3 | WNW | 54 | 1016 |
| 14:00 | 19:00 | 23.2°C | 21.1°C | 0 | 3.7 | WNW | 47 | 1016 |
| 15:00 | 20:00 | 23.3°C | 20.8°C | 0.01 | 4 | WNW | 46 | 1016 |
| 16:00 | 21:00 | 24°C | 21.1°C | 0.01 | 4.2 | WNW | 41 | 1015 |
| 17:00 | 22:00 | 22.1°C | 19.5°C | 0 | 3.3 | WNW | 41 | 1015 |
| 18:00 | 23:00 | 22.3°C | 20.1°C | 0 | 2.7 | WNW | 42 | 1015 |
| 19:00 | 00:00 | 20.6°C | 19.2°C | 0 | 1.9 | NW | 49 | 1015 |
| 20:00 | 01:00 | 18.2°C | 16.3°C | 0 | 2.5 | NW | 56 | 1015 |
| 21:00 | 02:00 | 16°C | 14.1°C | 0 | 2.5 | NNW | 65 | 1016 |
| 22:00 | 03:00 | 14.4°C | 12.2°C | 0 | 2.7 | NW | 68 | 1016 |
| 23:00 | 04:00 | 14.5°C | 12.6°C | 0 | 2.3 | WNW | 67 | 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
- Willmar — 45.000°, -95.000°, ERA5 grid cell center, 14.0 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 15 September 2023 specifically — not a monthly average. See the Willmar 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 Willmar, United States (45.00°N, 95.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Willmar, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willmar, 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 Willmar, 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.