Salem
United States · 18 August 2017
← 17 August 201719 August 2017 →
Average
21.1°C
low 16.2°C · high 27.2°C
Rainfall
10.8mm
rain recorded
Wind
3.1m/s
daily average
Humidity
76.2%
daily average
Cloud
30%
cover
Pressure
1011hPa
daily average
The temperature ranged from 16.2°C around 06:00 to 27.2°C around 16:00. Rain was recorded across 7 hours, from around 01:00 to 18:00 (10.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
45th percentile
Low temperature
34th percentile
Rainfall
90th percentile
Wind
29th 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 22.6°C, versus 21.1°C on this specific day.
Sun & daylight
Sunrise
06:38
Sunset
20:28
Day length
13h 50m
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 | 19.1°C | 18.7°C | 0.03 | 3.2 | ESE | 80 | 1011 |
| 01:00 | 06:00 | 18.7°C | 18°C | 1.08 | 3.7 | ESE | 83 | 1011 |
| 02:00 | 07:00 | 18.3°C | 17.5°C | 0 | 3.9 | ESE | 87 | 1010 |
| 03:00 | 08:00 | 18.2°C | 18.6°C | 1.17 | 2.2 | SE | 85 | 1011 |
| 04:00 | 09:00 | 17.9°C | 18.5°C | 5.16 | 1.6 | SE | 85 | 1011 |
| 05:00 | 10:00 | 16.4°C | 16.6°C | 2.28 | 2.4 | E | 97 | 1011 |
| 06:00 | 11:00 | 16.2°C | 16.7°C | 0.58 | 2 | ESE | 98 | 1012 |
| 07:00 | 12:00 | 16.3°C | 16.8°C | 0.05 | 2.1 | ESE | 97 | 1011 |
| 08:00 | 13:00 | 16.5°C | 17.8°C | 0 | 1.2 | S | 98 | 1012 |
| 09:00 | 14:00 | 18.2°C | 19.7°C | 0 | 1.1 | SW | 91 | 1013 |
| 10:00 | 15:00 | 22.5°C | 24.1°C | 0 | 1.3 | SSW | 72 | 1013 |
| 11:00 | 16:00 | 22.8°C | 24.1°C | 0 | 1.7 | S | 72 | 1012 |
| 12:00 | 17:00 | 24°C | 25.1°C | 0 | 2.4 | SSW | 69 | 1012 |
| 13:00 | 18:00 | 24.6°C | 25.5°C | 0 | 3 | SW | 69 | 1011 |
| 14:00 | 19:00 | 25.1°C | 25.7°C | 0.11 | 3.6 | WSW | 68 | 1011 |
| 15:00 | 20:00 | 26°C | 26.3°C | 0.08 | 3.8 | W | 63 | 1011 |
| 16:00 | 21:00 | 27.2°C | 27.2°C | 0 | 4.4 | WNW | 59 | 1010 |
| 17:00 | 22:00 | 26.1°C | 23.4°C | 0.01 | 6.4 | NW | 52 | 1010 |
| 18:00 | 23:00 | 25.2°C | 23°C | 0.23 | 6 | NW | 58 | 1011 |
| 19:00 | 00:00 | 24.6°C | 22.7°C | 0 | 5.4 | NNW | 57 | 1011 |
| 20:00 | 01:00 | 24.5°C | 23.3°C | 0 | 4.2 | NNW | 56 | 1012 |
| 21:00 | 02:00 | 22°C | 21.5°C | 0 | 3.1 | NNW | 65 | 1013 |
| 22:00 | 03:00 | 18.7°C | 18.7°C | 0 | 2.7 | NNW | 83 | 1013 |
| 23:00 | 04:00 | 17.7°C | 17.9°C | 0 | 2.2 | NNW | 85 | 1014 |
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 18 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Salem, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 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 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.