Home / Willow / 21 October 2017
Willow
United States · 21 October 2017
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Average
10.6°C
low 7.7°C · high 13.9°C
Rainfall
31mm
rain recorded
Wind
6.3m/s
daily average
Humidity
91.5%
daily average
Cloud
100%
cover
Pressure
1003hPa
daily average
The temperature ranged from 7.7°C around 00:00 to 13.9°C around 19:00. Rain was recorded across 23 hours, from around 01:00 to 23:00 (31mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
81th percentile
Low temperature
27th percentile
Rainfall
93th percentile
Wind
83th 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 10.7°C, versus 10.6°C on this specific day.
Sun & daylight
Sunrise
07:47
Sunset
18:17
Day length
10h 30m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 07:00 | 7.7°C | 3.5°C | 0.06 | 4.6 | SE | 88 | 1010 |
| 01:00 | 08:00 | 8.5°C | 4.4°C | 0.1 | 4.8 | SE | 87 | 1010 |
| 02:00 | 09:00 | 8.7°C | 4.4°C | 0.21 | 5 | ESE | 87 | 1009 |
| 03:00 | 10:00 | 9°C | 4.4°C | 0.63 | 5.4 | ESE | 86 | 1008 |
| 04:00 | 11:00 | 8.9°C | 4.2°C | 1.09 | 5.8 | E | 88 | 1007 |
| 05:00 | 12:00 | 9°C | 4.1°C | 1.36 | 6.1 | E | 88 | 1007 |
| 06:00 | 13:00 | 9.1°C | 3.8°C | 1.35 | 6.7 | E | 88 | 1005 |
| 07:00 | 14:00 | 9°C | 3.5°C | 1.02 | 6.9 | E | 90 | 1003 |
| 08:00 | 15:00 | 9.2°C | 4°C | 0.92 | 6.7 | E | 91 | 1003 |
| 09:00 | 16:00 | 9.4°C | 4.3°C | 0.66 | 6.4 | ESE | 90 | 1002 |
| 10:00 | 17:00 | 9.9°C | 5.1°C | 0.61 | 6.3 | ESE | 91 | 1003 |
| 11:00 | 18:00 | 10.3°C | 5.9°C | 1.09 | 6.1 | SE | 92 | 1003 |
| 12:00 | 19:00 | 10.8°C | 6.8°C | 0.65 | 5.8 | SSE | 93 | 1003 |
| 13:00 | 20:00 | 11.1°C | 7.4°C | 1.55 | 5.3 | SSE | 94 | 1003 |
| 14:00 | 21:00 | 11.1°C | 7.6°C | 2.12 | 5 | SSE | 93 | 1002 |
| 15:00 | 22:00 | 11.4°C | 8.4°C | 1.83 | 4.5 | SE | 93 | 1001 |
| 16:00 | 23:00 | 11.5°C | 7.8°C | 2.39 | 5.5 | ESE | 93 | 999 |
| 17:00 | 00:00 | 12°C | 8.2°C | 4.5 | 6 | SE | 94 | 999 |
| 18:00 | 01:00 | 13.7°C | 9.9°C | 2.95 | 6.8 | SSW | 96 | 999 |
| 19:00 | 02:00 | 13.9°C | 8.5°C | 1.44 | 9.1 | SW | 95 | 999 |
| 20:00 | 03:00 | 13.3°C | 8.4°C | 1.16 | 8.2 | SW | 96 | 1000 |
| 21:00 | 04:00 | 12.3°C | 6.6°C | 0.96 | 8.9 | SW | 96 | 1001 |
| 22:00 | 05:00 | 12.3°C | 7°C | 0.99 | 8.2 | SW | 93 | 1001 |
| 23:00 | 06:00 | 11.8°C | 6.5°C | 1.37 | 8 | SW | 94 | 1002 |
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
- Willow — 48.250°, -124.500°, ERA5 grid cell center, 2188.3 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 21 October 2017 specifically — not a monthly average. See the Willow 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 Willow, United States (48.25°N, 124.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Willow, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willow, 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 Willow, 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.