Home / Willmar / 15 September 2018
Willmar
United States · 15 September 2018
← 14 September 201816 September 2018 →
Average
26.6°C
low 21.3° · high 32.8°
Rainfall
0mm
dry day
Wind
4.1m/s
daily average
Humidity
73%
daily average
Cloud
15%
cover
Pressure
1016hPa
daily average
The temperature ranged from 21.3°C around 07:00 to 32.8°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
100th percentile
Low temperature
99th percentile
Rainfall
49th percentile
Wind
55th 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 18.5°C, versus 26.6°C on this specific day.
Sun & daylight
Sunrise
06:58
Sunset
19:30
Day length
12h 32m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 24.5 | 26.2 | 0 | 4.1 | SSE | 84 | 1016 |
| 01:00 | 06:00 | 24.5 | 25.4 | 0 | 4.7 | S | 82 | 1015 |
| 02:00 | 07:00 | 24.3 | 25.1 | 0 | 4.8 | S | 82 | 1016 |
| 03:00 | 08:00 | 23.7 | 24.5 | 0 | 4.7 | S | 84 | 1016 |
| 04:00 | 09:00 | 22.5 | 23.5 | 0 | 4.4 | SSW | 90 | 1016 |
| 05:00 | 10:00 | 21.8 | 22.5 | 0 | 4.1 | SSW | 89 | 1016 |
| 06:00 | 11:00 | 21.7 | 22.7 | 0 | 3.7 | SSW | 89 | 1017 |
| 07:00 | 12:00 | 21.3 | 22.7 | 0 | 2.9 | SSW | 90 | 1017 |
| 08:00 | 13:00 | 21.6 | 23.2 | 0 | 2.9 | SSW | 89 | 1018 |
| 09:00 | 14:00 | 23.2 | 25.1 | 0 | 3 | S | 86 | 1018 |
| 10:00 | 15:00 | 25.9 | 27.2 | 0 | 3.4 | S | 70 | 1018 |
| 11:00 | 16:00 | 27.8 | 29.3 | 0 | 3.7 | S | 66 | 1017 |
| 12:00 | 17:00 | 29.4 | 31 | 0 | 3.9 | S | 61 | 1017 |
| 13:00 | 18:00 | 30.3 | 32.2 | 0 | 4.1 | S | 62 | 1017 |
| 14:00 | 19:00 | 31 | 32.9 | 0 | 4.7 | S | 63 | 1016 |
| 15:00 | 20:00 | 32.1 | 33.4 | 0 | 5.3 | S | 58 | 1016 |
| 16:00 | 21:00 | 32.8 | 33.8 | 0 | 5.5 | S | 55 | 1015 |
| 17:00 | 22:00 | 32.2 | 33.7 | 0 | 5 | S | 57 | 1015 |
| 18:00 | 23:00 | 31.8 | 33.7 | 0 | 4.2 | S | 58 | 1015 |
| 19:00 | 00:00 | 30.8 | 32.5 | 0 | 3.9 | S | 58 | 1015 |
| 20:00 | 01:00 | 29.1 | 30.3 | 0 | 3.9 | S | 60 | 1015 |
| 21:00 | 02:00 | 27.1 | 28.1 | 0 | 4 | S | 66 | 1015 |
| 22:00 | 03:00 | 24.9 | 26.1 | 0 | 4 | S | 78 | 1015 |
| 23:00 | 04:00 | 24.2 | 25.2 | 0 | 4 | S | 79 | 1015 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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 2018 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 (2026-07-18). 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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willmar, 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 Willmar, 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.