Home / Gridley / 20 October 2018
Gridley
United States · 20 October 2018
← 19 October 201821 October 2018 →
Average
17.3°C
low 8.6°C · high 28.5°C
Rainfall
0mm
dry day
Wind
1.3m/s
daily average
Humidity
40.3%
daily average
Cloud
0%
cover
Pressure
1015hPa
daily average
The temperature ranged from 8.6°C around 07:00 to 28.5°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
67th percentile
Low temperature
16th percentile
Rainfall
75th percentile
Wind
22th 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 17.3°C on this specific day.
Sun & daylight
Sunrise
07:22
Sunset
18:20
Day length
10h 59m
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 | 13.6°C | 10.8°C | 0 | 1.2 | NE | 40 | 1016 |
| 01:00 | 08:00 | 12°C | 9°C | 0 | 1.6 | NE | 45 | 1016 |
| 02:00 | 09:00 | 11.3°C | 8.2°C | 0 | 1.7 | NNE | 47 | 1016 |
| 03:00 | 10:00 | 11°C | 8.7°C | 0 | 0.8 | ENE | 51 | 1016 |
| 04:00 | 11:00 | 10.4°C | 7.9°C | 0 | 0.9 | ESE | 51 | 1016 |
| 05:00 | 12:00 | 10°C | 7.3°C | 0 | 1.1 | E | 52 | 1016 |
| 06:00 | 13:00 | 9°C | 6.1°C | 0 | 1.3 | E | 56 | 1016 |
| 07:00 | 14:00 | 8.6°C | 5.8°C | 0 | 1.4 | ESE | 56 | 1016 |
| 08:00 | 15:00 | 10.2°C | 7.6°C | 0 | 1 | ESE | 52 | 1017 |
| 09:00 | 16:00 | 14.6°C | 11.8°C | 0 | 1.3 | ESE | 40 | 1017 |
| 10:00 | 17:00 | 17.6°C | 15.3°C | 0 | 0.9 | SSE | 34 | 1017 |
| 11:00 | 18:00 | 19.7°C | 17.7°C | 0 | 0.6 | S | 31 | 1017 |
| 12:00 | 19:00 | 21.6°C | 19.8°C | 0 | 0.6 | SW | 30 | 1016 |
| 13:00 | 20:00 | 23.6°C | 21.6°C | 0 | 0.6 | WSW | 26 | 1015 |
| 14:00 | 21:00 | 26.3°C | 23.8°C | 0 | 0.7 | SW | 17 | 1014 |
| 15:00 | 22:00 | 28.2°C | 26.4°C | 0 | 1.3 | SSW | 24 | 1013 |
| 16:00 | 23:00 | 28.5°C | 26.4°C | 0 | 1.5 | S | 23 | 1013 |
| 17:00 | 00:00 | 28.3°C | 26.4°C | 0 | 1.4 | SSE | 24 | 1012 |
| 18:00 | 01:00 | 24.9°C | 22.3°C | 0 | 2.1 | ESE | 27 | 1012 |
| 19:00 | 02:00 | 21°C | 18.4°C | 0 | 2.1 | ESE | 34 | 1012 |
| 20:00 | 03:00 | 17.7°C | 15°C | 0 | 2.3 | ESE | 44 | 1012 |
| 21:00 | 04:00 | 16.6°C | 14.3°C | 0 | 2.1 | ESE | 50 | 1013 |
| 22:00 | 05:00 | 15°C | 12.7°C | 0 | 1.9 | ESE | 54 | 1013 |
| 23:00 | 06:00 | 14.8°C | 12.9°C | 0 | 1.6 | ESE | 57 | 1013 |
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
- Gridley — 39.250°, -121.750°, ERA5 grid cell center, 13.6 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 20 October 2018 specifically — not a monthly average. See the Gridley 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 Gridley, United States (39.25°N, 121.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Gridley, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Gridley, 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 Gridley, 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.