Swartz
United States · 21 July 2018
Average
32.4°C
low 26.4°C · high 38.7°C
Rainfall
0.2mm
dry day
Wind
3.4m/s
daily average
Humidity
49.2%
daily average
Cloud
61%
cover
Pressure
1012hPa
daily average
The temperature ranged from 26.4°C around 07:00 to 38.7°C around 16:00. Rain was recorded for one hour, around 17:00 (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
100th percentile
Low temperature
92th percentile
Rainfall
48th percentile
Wind
93th 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 32.4°C on this specific day.
Sun & daylight
Sunrise
06:15
Sunset
20:13
Day length
13h 58m
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 | 31.2°C | 30.8°C | 0 | 4.1 | SSW | 44 | 1012 |
| 01:00 | 06:00 | 30.7°C | 30.6°C | 0 | 3.8 | SW | 45 | 1012 |
| 02:00 | 07:00 | 30.3°C | 30.7°C | 0 | 3.4 | SW | 47 | 1012 |
| 03:00 | 08:00 | 29.4°C | 30°C | 0 | 3.6 | SW | 53 | 1011 |
| 04:00 | 09:00 | 28.7°C | 29.8°C | 0 | 3.6 | SW | 59 | 1011 |
| 05:00 | 10:00 | 26.9°C | 28.1°C | 0 | 4 | W | 69 | 1013 |
| 06:00 | 11:00 | 26.9°C | 29.2°C | 0 | 3.1 | NW | 73 | 1015 |
| 07:00 | 12:00 | 26.4°C | 29.6°C | 0 | 1.8 | WNW | 75 | 1015 |
| 08:00 | 13:00 | 27.3°C | 30.7°C | 0 | 1.4 | SW | 71 | 1015 |
| 09:00 | 14:00 | 28.4°C | 31.1°C | 0 | 2.1 | SW | 64 | 1015 |
| 10:00 | 15:00 | 30.2°C | 31.7°C | 0 | 2.9 | SW | 53 | 1015 |
| 11:00 | 16:00 | 32°C | 33.5°C | 0 | 3.5 | WSW | 51 | 1014 |
| 12:00 | 17:00 | 33.7°C | 34.7°C | 0 | 4 | WSW | 45 | 1014 |
| 13:00 | 18:00 | 35.3°C | 36.2°C | 0 | 4.3 | WSW | 42 | 1013 |
| 14:00 | 19:00 | 36.6°C | 37.6°C | 0.02 | 4.3 | WSW | 40 | 1012 |
| 15:00 | 20:00 | 37.9°C | 38.4°C | 0.03 | 4.1 | W | 34 | 1011 |
| 16:00 | 21:00 | 38.7°C | 38.9°C | 0 | 4.1 | W | 31 | 1011 |
| 17:00 | 22:00 | 38.1°C | 38.8°C | 0.15 | 4.3 | WSW | 35 | 1010 |
| 18:00 | 23:00 | 37.2°C | 38.2°C | 0.01 | 4.4 | WSW | 39 | 1010 |
| 19:00 | 00:00 | 36.8°C | 38.5°C | 0 | 3.1 | W | 38 | 1010 |
| 20:00 | 01:00 | 35°C | 36.8°C | 0 | 2.2 | WSW | 40 | 1010 |
| 21:00 | 02:00 | 33.5°C | 34.5°C | 0 | 2.4 | WSW | 40 | 1010 |
| 22:00 | 03:00 | 33°C | 34.2°C | 0 | 3.4 | WSW | 46 | 1011 |
| 23:00 | 04:00 | 32.9°C | 33.7°C | 0 | 3.9 | WSW | 46 | 1010 |
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
- Swartz — 32.500°, -92.000°, ERA5 grid cell center, 7.8 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 21 July 2018 specifically — not a monthly average. See the Swartz 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 Swartz, United States (32.50°N, 92.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Swartz, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Swartz, 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 Swartz, 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.