Salem
United States · 20 August 2017
← 19 August 201721 August 2017 →
Average
21.9°C
low 16.6°C · high 25.9°C
Rainfall
0.2mm
dry day
Wind
3.9m/s
daily average
Humidity
80.4%
daily average
Cloud
34%
cover
Pressure
1012hPa
daily average
The temperature ranged from 16.6°C around 07:00 to 25.9°C around 13:00. Rain was recorded for one hour, around 15:00 (0.2mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
33th percentile
Low temperature
46th percentile
Rainfall
60th percentile
Wind
48th 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 22.4°C, versus 21.9°C on this specific day.
Sun & daylight
Sunrise
06:40
Sunset
20:25
Day length
13h 45m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 19.9°C | 18.7°C | 0 | 5.2 | SSE | 85 | 1009 |
| 01:00 | 06:00 | 20.3°C | 19.8°C | 0 | 4.4 | SSE | 84 | 1009 |
| 02:00 | 07:00 | 20.2°C | 20.6°C | 0 | 3.3 | SSE | 85 | 1009 |
| 03:00 | 08:00 | 19.3°C | 20°C | 0 | 2.7 | SSE | 90 | 1009 |
| 04:00 | 09:00 | 18.2°C | 19°C | 0 | 2.3 | SE | 95 | 1009 |
| 05:00 | 10:00 | 17.1°C | 18.2°C | 0 | 1.7 | N | 98 | 1010 |
| 06:00 | 11:00 | 16.7°C | 17.9°C | 0 | 1.5 | ESE | 99 | 1011 |
| 07:00 | 12:00 | 16.6°C | 17.8°C | 0 | 1.4 | N | 99 | 1011 |
| 08:00 | 13:00 | 17.9°C | 17.7°C | 0 | 4.1 | NE | 99 | 1012 |
| 09:00 | 14:00 | 20.2°C | 20.8°C | 0 | 3.9 | NE | 93 | 1012 |
| 10:00 | 15:00 | 24.3°C | 25.5°C | 0 | 3.4 | ENE | 77 | 1013 |
| 11:00 | 16:00 | 24.6°C | 25.3°C | 0 | 4.2 | E | 75 | 1014 |
| 12:00 | 17:00 | 25.9°C | 26.8°C | 0 | 4.1 | E | 71 | 1014 |
| 13:00 | 18:00 | 25.9°C | 26.7°C | 0 | 4 | ENE | 69 | 1014 |
| 14:00 | 19:00 | 25.8°C | 26.1°C | 0 | 4.5 | E | 68 | 1013 |
| 15:00 | 20:00 | 25.8°C | 26.5°C | 0.13 | 3.9 | E | 67 | 1014 |
| 16:00 | 21:00 | 25.7°C | 27.1°C | 0.02 | 2.9 | E | 68 | 1013 |
| 17:00 | 22:00 | 25.6°C | 26.3°C | 0 | 3.8 | ENE | 69 | 1014 |
| 18:00 | 23:00 | 25.3°C | 25.6°C | 0.02 | 4.2 | NE | 69 | 1014 |
| 19:00 | 00:00 | 24.4°C | 23.9°C | 0.01 | 5.1 | NE | 70 | 1014 |
| 20:00 | 01:00 | 24.2°C | 23.2°C | 0.01 | 5.3 | NE | 67 | 1014 |
| 21:00 | 02:00 | 22.9°C | 21.3°C | 0.01 | 5.6 | NE | 70 | 1015 |
| 22:00 | 03:00 | 20°C | 18.3°C | 0 | 5.7 | ENE | 82 | 1015 |
| 23:00 | 04:00 | 19.9°C | 18.3°C | 0 | 5.3 | ENE | 80 | 1015 |
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
- Salem — 43.750°, -97.500°, ERA5 grid cell center, 9.4 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 20 August 2017 specifically — not a monthly average. See the Salem 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 Salem, United States (43.75°N, 97.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Salem, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Salem, 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 Salem, 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.