Home / Polson / 11 September 2017
Polson
United States · 11 September 2017
← 10 September 201712 September 2017 →
Average
19.4°C
low 10.8°C · high 27.8°C
Rainfall
0mm
dry day
Wind
1.3m/s
daily average
Humidity
37.2%
daily average
Cloud
7%
cover
Pressure
1019hPa
daily average
The temperature ranged from 10.8°C around 07:00 to 27.8°C around 18:00. 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
83th percentile
Low temperature
60th percentile
Rainfall
53th percentile
Wind
54th 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 15.9°C, versus 19.4°C on this specific day.
Sun & daylight
Sunrise
07:09
Sunset
19:56
Day length
12h 47m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Denver.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 15.7°C | 13.3°C | 0 | 1.3 | SW | 43 | 1021 |
| 01:00 | 07:00 | 15.5°C | 13.2°C | 0 | 1.4 | SSW | 46 | 1021 |
| 02:00 | 08:00 | 14.9°C | 12.7°C | 0 | 1.5 | S | 52 | 1022 |
| 03:00 | 09:00 | 13.9°C | 11.9°C | 0 | 1.5 | S | 57 | 1022 |
| 04:00 | 10:00 | 11.5°C | 9.3°C | 0 | 1.1 | SSW | 59 | 1023 |
| 05:00 | 11:00 | 11.3°C | 9.2°C | 0 | 1 | SSW | 60 | 1023 |
| 06:00 | 12:00 | 11.1°C | 9.3°C | 0 | 0.7 | SSW | 61 | 1023 |
| 07:00 | 13:00 | 10.8°C | 9.2°C | 0 | 0.4 | SSW | 63 | 1023 |
| 08:00 | 14:00 | 12.9°C | 11.6°C | 0 | 0.3 | SE | 60 | 1023 |
| 09:00 | 15:00 | 15.8°C | 14.1°C | 0 | 0.6 | S | 46 | 1023 |
| 10:00 | 16:00 | 17.4°C | 15.2°C | 0 | 1.2 | SSW | 40 | 1023 |
| 11:00 | 17:00 | 21.3°C | 18.8°C | 0 | 1.4 | SSW | 31 | 1022 |
| 12:00 | 18:00 | 22.1°C | 19.6°C | 0 | 1.6 | SSW | 29 | 1021 |
| 13:00 | 19:00 | 23.1°C | 20.5°C | 0 | 1.7 | SSW | 27 | 1019 |
| 14:00 | 20:00 | 25.2°C | 22.2°C | 0 | 1.9 | SSW | 23 | 1018 |
| 15:00 | 21:00 | 26.8°C | 23.5°C | 0 | 2.2 | SW | 20 | 1017 |
| 16:00 | 22:00 | 26.9°C | 23.5°C | 0 | 2.2 | SW | 19 | 1015 |
| 17:00 | 23:00 | 27.6°C | 24.1°C | 0 | 2.2 | SW | 17 | 1014 |
| 18:00 | 00:00 | 27.8°C | 24.4°C | 0 | 1.9 | SW | 16 | 1014 |
| 19:00 | 01:00 | 27.3°C | 25.3°C | 0 | 1.3 | SSW | 25 | 1013 |
| 20:00 | 02:00 | 24.6°C | 21.9°C | 0 | 1.3 | SSW | 21 | 1013 |
| 21:00 | 03:00 | 21.1°C | 18.3°C | 0 | 1.1 | SSW | 24 | 1014 |
| 22:00 | 04:00 | 21.4°C | 18.8°C | 0 | 0.9 | SSW | 25 | 1014 |
| 23:00 | 05:00 | 19.2°C | 16.5°C | 0 | 1.1 | SSW | 29 | 1013 |
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
- Polson — 47.750°, -114.250°, ERA5 grid cell center, 9.0 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 11 September 2017 specifically — not a monthly average. See the Polson 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 (2026-07-19). Historical climate data for Polson, United States (47.75°N, 114.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Polson, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Polson, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Polson, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.