Home / Gilbert / 20 September 2017
Gilbert
United States · 20 September 2017
← 19 September 201721 September 2017 →
Average
29.7°C
low 21.6°C · high 37.4°C
Rainfall
0mm
dry day
Wind
3.1m/s
daily average
Humidity
17.8%
daily average
Cloud
0%
cover
Pressure
1007hPa
daily average
The temperature ranged from 21.6°C around 05:00 to 37.4°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
52th percentile
Low temperature
24th percentile
Rainfall
75th percentile
Wind
94th 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 30.2°C, versus 29.7°C on this specific day.
Sun & daylight
Sunrise
06:14
Sunset
18:25
Day length
12h 12m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Phoenix.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 07:00 | 26.2°C | 22.5°C | 0 | 2.5 | SSE | 18 | 1008 |
| 01:00 | 08:00 | 25.5°C | 21.8°C | 0 | 2.4 | SE | 18 | 1008 |
| 02:00 | 09:00 | 24.2°C | 20.1°C | 0 | 2.5 | SE | 17 | 1008 |
| 03:00 | 10:00 | 22.4°C | 18.8°C | 0 | 2.5 | SE | 23 | 1008 |
| 04:00 | 11:00 | 21.8°C | 18°C | 0 | 2.6 | SE | 22 | 1009 |
| 05:00 | 12:00 | 21.6°C | 17.6°C | 0 | 2.6 | ESE | 21 | 1009 |
| 06:00 | 13:00 | 21.7°C | 17.7°C | 0 | 2.7 | ESE | 22 | 1009 |
| 07:00 | 14:00 | 22.1°C | 18.1°C | 0 | 2.9 | ESE | 23 | 1010 |
| 08:00 | 15:00 | 26.2°C | 22.6°C | 0 | 2.8 | SE | 20 | 1010 |
| 09:00 | 16:00 | 29.4°C | 26.1°C | 0 | 3.6 | SSE | 24 | 1010 |
| 10:00 | 17:00 | 31.5°C | 28.6°C | 0 | 4.1 | S | 26 | 1010 |
| 11:00 | 18:00 | 33.2°C | 30.2°C | 0 | 4.2 | S | 23 | 1010 |
| 12:00 | 19:00 | 34.6°C | 31.5°C | 0 | 4.2 | SSW | 22 | 1009 |
| 13:00 | 20:00 | 35.8°C | 32.6°C | 0 | 4.3 | SSW | 20 | 1007 |
| 14:00 | 21:00 | 36.9°C | 32.8°C | 0 | 4.6 | SSW | 15 | 1006 |
| 15:00 | 22:00 | 37.2°C | 33.1°C | 0 | 3.6 | SW | 12 | 1005 |
| 16:00 | 23:00 | 37.4°C | 33.3°C | 0 | 3.4 | SW | 11 | 1005 |
| 17:00 | 00:00 | 37°C | 32.7°C | 0 | 3.3 | SW | 10 | 1004 |
| 18:00 | 01:00 | 36.2°C | 32.5°C | 0 | 2.3 | SW | 10 | 1004 |
| 19:00 | 02:00 | 33.7°C | 29.6°C | 0 | 2.6 | SW | 10 | 1004 |
| 20:00 | 03:00 | 31.2°C | 27.6°C | 0 | 2.3 | SSW | 14 | 1005 |
| 21:00 | 04:00 | 30.4°C | 26.2°C | 0 | 3.2 | SSW | 15 | 1006 |
| 22:00 | 05:00 | 29.1°C | 24.7°C | 0 | 3.5 | SSW | 15 | 1006 |
| 23:00 | 06:00 | 28°C | 23.9°C | 0 | 3.1 | S | 16 | 1007 |
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
- Gilbert — 33.250°, -111.750°, ERA5 grid cell center, 12.0 km from requested point
- Time zone
- America/Phoenix
- What's shown here
- The hourly and daily record for 20 September 2017 specifically — not a monthly average. See the Gilbert 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 Gilbert, United States (33.25°N, 111.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Gilbert, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Gilbert, 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 Gilbert, 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.