Home / Hilo / 21 November 2017
Hilo
United States · 21 November 2017
← 20 November 201722 November 2017 →
Average
14.6°C
low 13.6° · high 16.4°
Rainfall
0mm
dry day
Wind
4.2m/s
daily average
Humidity
84.7%
daily average
Cloud
93%
cover
Pressure
1019hPa
daily average
The temperature ranged from 13.6°C around 19:00 to 16.4°C around 14:00. 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
98th percentile
Low temperature
100th percentile
Rainfall
60th percentile
Wind
61th 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 11.3°C, versus 14.6°C on this specific day.
Sun & daylight
Sunrise
07:03
Sunset
16:56
Day length
9h 53m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 13.7 | 10.5 | 0 | 5.5 | E | 90 | 1019 |
| 01:00 | 09:00 | 13.7 | 10.4 | 0 | 5.6 | E | 90 | 1019 |
| 02:00 | 10:00 | 14 | 10.4 | 0 | 5.9 | E | 84 | 1019 |
| 03:00 | 11:00 | 14.3 | 10.9 | 0 | 5.6 | E | 83 | 1019 |
| 04:00 | 12:00 | 14.2 | 11.4 | 0 | 4.7 | ESE | 83 | 1019 |
| 05:00 | 13:00 | 14.1 | 11.7 | 0 | 4.1 | SE | 83 | 1020 |
| 06:00 | 14:00 | 14.1 | 11.4 | 0 | 4.5 | SE | 83 | 1020 |
| 07:00 | 15:00 | 14.2 | 10.7 | 0 | 5.5 | ESE | 82 | 1020 |
| 08:00 | 16:00 | 14.3 | 10.6 | 0 | 5.8 | ESE | 81 | 1020 |
| 09:00 | 17:00 | 14.8 | 11.5 | 0 | 5.4 | ESE | 80 | 1020 |
| 10:00 | 18:00 | 15.4 | 12.2 | 0 | 5.4 | SE | 79 | 1021 |
| 11:00 | 19:00 | 16 | 12.7 | 0 | 5.7 | SE | 78 | 1020 |
| 12:00 | 20:00 | 16.3 | 13.3 | 0 | 5.4 | SE | 77 | 1019 |
| 13:00 | 21:00 | 16.3 | 13.8 | 0 | 4.7 | SSE | 77 | 1018 |
| 14:00 | 22:00 | 16.4 | 14.2 | 0 | 4.2 | SSE | 78 | 1018 |
| 15:00 | 23:00 | 15.9 | 14 | 0 | 3.9 | SSE | 81 | 1019 |
| 16:00 | 00:00 | 15.2 | 13.6 | 0 | 3.4 | S | 85 | 1019 |
| 17:00 | 01:00 | 14.4 | 13.5 | 0 | 2.5 | SSW | 90 | 1019 |
| 18:00 | 02:00 | 13.9 | 14 | 0 | 1.1 | SSW | 92 | 1019 |
| 19:00 | 03:00 | 13.6 | 13.3 | 0 | 1.6 | ESE | 94 | 1020 |
| 20:00 | 04:00 | 14.1 | 13.1 | 0 | 2.5 | ESE | 91 | 1020 |
| 21:00 | 05:00 | 13.8 | 12.6 | 0 | 2.8 | SE | 92 | 1020 |
| 22:00 | 06:00 | 14 | 12.6 | 0 | 3 | SE | 91 | 1020 |
| 23:00 | 07:00 | 14.1 | 12.8 | 0 | 3 | SE | 90 | 1021 |
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
- Hilo — 38.750°, -123.500°, ERA5 grid cell center, 3693.4 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 21 November 2017 specifically — not a monthly average. See the Hilo 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 Hilo, United States (38.75°N, 123.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Hilo, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Hilo, 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 Hilo, 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.