Home / Willmar / 18 September 2020
Willmar
United States · 18 September 2020
← 17 September 202019 September 2020 →
Average
11.2°C
low 5°C · high 17.7°C
Rainfall
0mm
dry day
Wind
3m/s
daily average
Humidity
60.7%
daily average
Cloud
2%
cover
Pressure
1028hPa
daily average
The temperature ranged from 5°C around 05:00 to 17.7°C around 16:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
8th percentile
Low temperature
1th percentile
Rainfall
43th percentile
Wind
21th 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 18.7°C, versus 11.2°C on this specific day.
Sun & daylight
Sunrise
07:02
Sunset
19:23
Day length
12h 21m
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 | 7.5°C | 4.8°C | 0 | 2.2 | E | 82 | 1028 |
| 01:00 | 06:00 | 7.2°C | 4.4°C | 0 | 2.3 | E | 85 | 1028 |
| 02:00 | 07:00 | 7.2°C | 4.3°C | 0 | 2.4 | E | 86 | 1029 |
| 03:00 | 08:00 | 6.2°C | 3.2°C | 0 | 2.5 | E | 89 | 1028 |
| 04:00 | 09:00 | 5.6°C | 2.6°C | 0 | 2.4 | E | 91 | 1029 |
| 05:00 | 10:00 | 5°C | 2.4°C | 0 | 2 | E | 97 | 1029 |
| 06:00 | 11:00 | 5.4°C | 2.8°C | 0 | 2 | E | 94 | 1030 |
| 07:00 | 12:00 | 5.6°C | 2.8°C | 0 | 2.1 | ESE | 90 | 1030 |
| 08:00 | 13:00 | 6°C | 2.6°C | 0 | 2.9 | SE | 84 | 1031 |
| 09:00 | 14:00 | 8.9°C | 5.6°C | 0 | 2.9 | SE | 71 | 1031 |
| 10:00 | 15:00 | 13.1°C | 9.3°C | 0 | 3.3 | SSE | 51 | 1031 |
| 11:00 | 16:00 | 14.1°C | 9.6°C | 0 | 3.7 | SSE | 42 | 1031 |
| 12:00 | 17:00 | 15.6°C | 11.1°C | 0 | 3.8 | SSE | 37 | 1030 |
| 13:00 | 18:00 | 16.2°C | 11.8°C | 0 | 3.7 | SSE | 37 | 1029 |
| 14:00 | 19:00 | 16.5°C | 12.2°C | 0 | 3.5 | SSE | 36 | 1029 |
| 15:00 | 20:00 | 17°C | 12.9°C | 0 | 3.4 | SSE | 35 | 1027 |
| 16:00 | 21:00 | 17.7°C | 13.6°C | 0 | 3.3 | SSE | 33 | 1027 |
| 17:00 | 22:00 | 16.6°C | 12.4°C | 0 | 3.7 | SSE | 38 | 1026 |
| 18:00 | 23:00 | 16.3°C | 12.2°C | 0 | 3.4 | SSE | 37 | 1025 |
| 19:00 | 00:00 | 15.6°C | 12°C | 0 | 2.5 | SE | 38 | 1025 |
| 20:00 | 01:00 | 14.1°C | 10.3°C | 0 | 2.9 | SE | 43 | 1025 |
| 21:00 | 02:00 | 12.4°C | 8.4°C | 0 | 3.3 | SE | 48 | 1025 |
| 22:00 | 03:00 | 10.1°C | 5.8°C | 0 | 3.6 | SE | 55 | 1025 |
| 23:00 | 04:00 | 9.8°C | 5.5°C | 0 | 3.8 | SE | 58 | 1025 |
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 18 September 2020 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willmar, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 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 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.