Home / Gilbert / 21 September 2017
Gilbert
United States · 21 September 2017
← 20 September 201722 September 2017 →
Average
29.2°C
low 22° · high 36.1°
Rainfall
0mm
dry day
Wind
3.7m/s
daily average
Humidity
17.6%
daily average
Cloud
0%
cover
Pressure
1006hPa
daily average
The temperature ranged from 22°C around 06:00 to 36.1°C around 15:00. 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
39th percentile
Low temperature
32th percentile
Rainfall
75th percentile
Wind
98th 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°C, versus 29.2°C on this specific day.
Sun & daylight
Sunrise
06:14
Sunset
18:24
Day length
12h 10m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Phoenix.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 07:00 | 26.6 | 23 | 0 | 2.7 | SSE | 20 | 1007 |
| 01:00 | 08:00 | 25 | 21.2 | 0 | 2.8 | SSE | 20 | 1008 |
| 02:00 | 09:00 | 24.3 | 20.5 | 0 | 2.5 | SE | 20 | 1008 |
| 03:00 | 10:00 | 22.5 | 19 | 0 | 2.6 | ESE | 26 | 1007 |
| 04:00 | 11:00 | 22.3 | 18.7 | 0 | 2.6 | SE | 25 | 1007 |
| 05:00 | 12:00 | 22 | 18.1 | 0 | 2.8 | SE | 24 | 1007 |
| 06:00 | 13:00 | 22 | 17.8 | 0 | 2.9 | SE | 22 | 1008 |
| 07:00 | 14:00 | 22.4 | 18.1 | 0 | 3.1 | SE | 22 | 1008 |
| 08:00 | 15:00 | 26.1 | 22 | 0 | 3.2 | SSE | 19 | 1008 |
| 09:00 | 16:00 | 28.6 | 24.1 | 0 | 4.1 | S | 19 | 1009 |
| 10:00 | 17:00 | 30.7 | 26.2 | 0 | 4.4 | S | 18 | 1008 |
| 11:00 | 18:00 | 32.6 | 28.3 | 0 | 4.4 | SSW | 17 | 1007 |
| 12:00 | 19:00 | 34 | 30 | 0 | 4.5 | SSW | 18 | 1007 |
| 13:00 | 20:00 | 35.1 | 30.7 | 0 | 4.7 | SSW | 16 | 1005 |
| 14:00 | 21:00 | 35.9 | 31 | 0 | 5.2 | SW | 14 | 1004 |
| 15:00 | 22:00 | 36.1 | 31.4 | 0 | 4.4 | SW | 12 | 1003 |
| 16:00 | 23:00 | 36.1 | 30.8 | 0 | 5.3 | SW | 12 | 1002 |
| 17:00 | 00:00 | 35.8 | 30.1 | 0 | 5.5 | SW | 12 | 1002 |
| 18:00 | 01:00 | 34.6 | 29.1 | 0 | 4.9 | SW | 11 | 1002 |
| 19:00 | 02:00 | 32.8 | 27.9 | 0 | 4.1 | SW | 12 | 1002 |
| 20:00 | 03:00 | 30.2 | 25.7 | 0 | 3.6 | SW | 14 | 1003 |
| 21:00 | 04:00 | 29.4 | 25.2 | 0 | 3.3 | SW | 15 | 1004 |
| 22:00 | 05:00 | 28.6 | 24.7 | 0 | 3 | SW | 16 | 1004 |
| 23:00 | 06:00 | 27.5 | 24 | 0 | 2.4 | SW | 19 | 1004 |
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
- 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 21 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.