Home / Summit / 11 September 2017
Summit
United States · 11 September 2017
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Average
32.1°C
low 25°C · high 38.1°C
Rainfall
0mm
dry day
Wind
1.7m/s
daily average
Humidity
27.7%
daily average
Cloud
22%
cover
Pressure
1011hPa
daily average
The temperature ranged from 25°C around 05:00 to 38.1°C around 17:00. 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
92th percentile
Low temperature
90th percentile
Rainfall
69th percentile
Wind
14th 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 28.7°C, versus 32.1°C on this specific day.
Sun & daylight
Sunrise
06:05
Sunset
18:34
Day length
12h 29m
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 | 28.9°C | 27.4°C | 0 | 2.5 | ESE | 33 | 1011 |
| 01:00 | 08:00 | 27.5°C | 26.1°C | 0 | 2.5 | ESE | 35 | 1011 |
| 02:00 | 09:00 | 26.7°C | 25.6°C | 0 | 2.5 | SE | 41 | 1011 |
| 03:00 | 10:00 | 25.2°C | 23.7°C | 0 | 2.4 | SE | 40 | 1012 |
| 04:00 | 11:00 | 25.1°C | 23.8°C | 0 | 2.2 | SE | 41 | 1012 |
| 05:00 | 12:00 | 25°C | 23.6°C | 0 | 2 | SE | 39 | 1012 |
| 06:00 | 13:00 | 25°C | 24°C | 0 | 1.7 | SE | 40 | 1013 |
| 07:00 | 14:00 | 26.2°C | 25.1°C | 0 | 1.9 | SE | 37 | 1013 |
| 08:00 | 15:00 | 29.6°C | 28.6°C | 0 | 1.2 | ESE | 28 | 1014 |
| 09:00 | 16:00 | 31.5°C | 30.9°C | 0 | 0.9 | E | 26 | 1014 |
| 10:00 | 17:00 | 34.4°C | 33.5°C | 0 | 1.2 | ENE | 22 | 1014 |
| 11:00 | 18:00 | 34.9°C | 34.4°C | 0 | 1.1 | NE | 23 | 1013 |
| 12:00 | 19:00 | 35.6°C | 35.2°C | 0 | 1.2 | NNE | 24 | 1012 |
| 13:00 | 20:00 | 37°C | 36.4°C | 0 | 1.4 | N | 21 | 1011 |
| 14:00 | 21:00 | 37.8°C | 37.1°C | 0 | 1.5 | N | 20 | 1011 |
| 15:00 | 22:00 | 37.8°C | 36.9°C | 0 | 1.2 | NNE | 18 | 1009 |
| 16:00 | 23:00 | 38°C | 36.5°C | 0 | 2.3 | N | 18 | 1009 |
| 17:00 | 00:00 | 38.1°C | 36.3°C | 0 | 2.2 | N | 17 | 1008 |
| 18:00 | 01:00 | 37.8°C | 36.3°C | 0 | 1.5 | NNE | 16 | 1008 |
| 19:00 | 02:00 | 36.1°C | 35°C | 0 | 1 | NNE | 18 | 1009 |
| 20:00 | 03:00 | 34.3°C | 33.5°C | 0 | 1.6 | N | 24 | 1010 |
| 21:00 | 04:00 | 33.7°C | 32.8°C | 0 | 1.6 | NNW | 25 | 1011 |
| 22:00 | 05:00 | 32.5°C | 31.7°C | 0 | 1.7 | NNW | 27 | 1011 |
| 23:00 | 06:00 | 31.3°C | 30.8°C | 0 | 1.4 | NNW | 30 | 1011 |
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
- Summit — 32.000°, -111.000°, ERA5 grid cell center, 8.7 km from requested point
- Time zone
- America/Phoenix
- What's shown here
- The hourly and daily record for 11 September 2017 specifically — not a monthly average. See the Summit 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 (2026-07-21). Historical climate data for Summit, United States (32.00°N, 111.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Summit, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Summit, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Summit, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.