Home / Polson / 7 September 2018
Polson
United States · 7 September 2018
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Average
20.5°C
low 13.4°C · high 28.2°C
Rainfall
0mm
dry day
Wind
1.2m/s
daily average
Humidity
44.3%
daily average
Cloud
20%
cover
Pressure
1014hPa
daily average
The temperature ranged from 13.4°C around 07:00 to 28.2°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
73th percentile
Low temperature
74th percentile
Rainfall
62th percentile
Wind
44th 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 17.6°C, versus 20.5°C on this specific day.
Sun & daylight
Sunrise
07:03
Sunset
20:05
Day length
13h 2m
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 | 18.2°C | 17.6°C | 0 | 0.3 | E | 53 | 1014 |
| 01:00 | 07:00 | 17.9°C | 17.5°C | 0 | 0.1 | NNE | 56 | 1014 |
| 02:00 | 08:00 | 16.2°C | 16°C | 0 | 0.1 | NE | 63 | 1015 |
| 03:00 | 09:00 | 15.4°C | 15°C | 0 | 0.2 | ESE | 64 | 1015 |
| 04:00 | 10:00 | 14°C | 14°C | 0 | 0.1 | NNW | 76 | 1015 |
| 05:00 | 11:00 | 13.9°C | 13.7°C | 0 | 0.2 | SSW | 76 | 1016 |
| 06:00 | 12:00 | 13.9°C | 13.6°C | 0 | 0.3 | SE | 76 | 1016 |
| 07:00 | 13:00 | 13.4°C | 13.2°C | 0 | 0.2 | ESE | 77 | 1016 |
| 08:00 | 14:00 | 15.6°C | 15.7°C | 0 | 0.2 | SSW | 73 | 1017 |
| 09:00 | 15:00 | 17.8°C | 17.8°C | 0 | 0.5 | SSW | 65 | 1017 |
| 10:00 | 16:00 | 19°C | 17.8°C | 0 | 0.9 | SSW | 47 | 1017 |
| 11:00 | 17:00 | 23.5°C | 21.4°C | 0.01 | 1.1 | SSW | 28 | 1017 |
| 12:00 | 18:00 | 24.2°C | 22.1°C | 0 | 1.2 | SSW | 28 | 1016 |
| 13:00 | 19:00 | 25.2°C | 23.1°C | 0 | 1.5 | SW | 28 | 1015 |
| 14:00 | 20:00 | 26.5°C | 23.8°C | 0 | 1.7 | SW | 22 | 1014 |
| 15:00 | 21:00 | 28.2°C | 25.1°C | 0 | 2 | SW | 19 | 1013 |
| 16:00 | 22:00 | 28°C | 24.1°C | 0 | 3.1 | SW | 18 | 1012 |
| 17:00 | 23:00 | 28°C | 24°C | 0 | 3.2 | WSW | 18 | 1011 |
| 18:00 | 00:00 | 27.8°C | 23.6°C | 0 | 3.3 | WSW | 18 | 1011 |
| 19:00 | 01:00 | 27.2°C | 24.1°C | 0 | 1.7 | WSW | 18 | 1011 |
| 20:00 | 02:00 | 21.5°C | 18.6°C | 0 | 2.3 | SW | 33 | 1011 |
| 21:00 | 03:00 | 19.5°C | 16.9°C | 0 | 1.9 | SSW | 36 | 1011 |
| 22:00 | 04:00 | 19.4°C | 16.8°C | 0 | 1.7 | SSW | 35 | 1011 |
| 23:00 | 05:00 | 18.6°C | 16.6°C | 0 | 1.2 | SSW | 41 | 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
- 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 7 September 2018 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 (2026-07-21). 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 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Polson, 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 Polson, 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.