Home / Marshalltown / 1 September 2018
Marshalltown
United States · 1 September 2018
← 31 August 20182 September 2018 →
Average
24.8°C
low 21° · high 28.6°
Rainfall
28.6mm
rain recorded
Wind
3.4m/s
daily average
Humidity
82.8%
daily average
Cloud
98%
cover
Pressure
1012hPa
daily average
The temperature ranged from 21°C around 07:00 to 28.6°C around 17:00. Rain was recorded across 11 hours, from around 01:00 to 21:00 (28.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
70th percentile
Low temperature
87th percentile
Rainfall
99th 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 20.9°C, versus 24.8°C on this specific day.
Sun & daylight
Sunrise
06:37
Sunset
19:45
Day length
13h 8m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 22.7 | 23.5 | 0 | 4.1 | S | 85 | 1011 |
| 01:00 | 06:00 | 23.4 | 24.5 | 0.89 | 3.9 | S | 83 | 1010 |
| 02:00 | 07:00 | 24 | 24.2 | 0.79 | 5.5 | S | 82 | 1010 |
| 03:00 | 08:00 | 23.5 | 23.7 | 0.43 | 5.5 | SSW | 85 | 1010 |
| 04:00 | 09:00 | 22.6 | 24.7 | 1.31 | 3.2 | SSW | 92 | 1010 |
| 05:00 | 10:00 | 21.9 | 23.3 | 12.09 | 4 | SSW | 95 | 1011 |
| 06:00 | 11:00 | 21.1 | 23.4 | 10.85 | 2.4 | SSW | 97 | 1012 |
| 07:00 | 12:00 | 21 | 22.6 | 0.81 | 3.2 | SSW | 96 | 1012 |
| 08:00 | 13:00 | 21.2 | 23 | 0 | 3 | S | 96 | 1012 |
| 09:00 | 14:00 | 22 | 23.1 | 0 | 4.2 | S | 94 | 1012 |
| 10:00 | 15:00 | 25 | 26.9 | 0 | 3.5 | SSW | 80 | 1012 |
| 11:00 | 16:00 | 26.3 | 29.1 | 0 | 2.5 | SW | 76 | 1013 |
| 12:00 | 17:00 | 27.3 | 30.6 | 0 | 1.6 | S | 71 | 1012 |
| 13:00 | 18:00 | 27.5 | 28.9 | 0.11 | 4.7 | SSW | 71 | 1013 |
| 14:00 | 19:00 | 28.4 | 30.9 | 0.59 | 3.7 | SW | 71 | 1012 |
| 15:00 | 20:00 | 27.6 | 31.8 | 0 | 1.4 | SW | 76 | 1012 |
| 16:00 | 21:00 | 27.7 | 32.4 | 0 | 1.3 | SSE | 79 | 1012 |
| 17:00 | 22:00 | 28.6 | 31.9 | 0 | 3.2 | SE | 74 | 1012 |
| 18:00 | 23:00 | 28.6 | 32.4 | 0 | 2.6 | SE | 75 | 1012 |
| 19:00 | 00:00 | 27.7 | 30.8 | 0.05 | 2.9 | SSW | 75 | 1012 |
| 20:00 | 01:00 | 26.6 | 28.8 | 0.26 | 3.7 | S | 77 | 1012 |
| 21:00 | 02:00 | 25 | 26.6 | 0.24 | 3.8 | SSE | 80 | 1012 |
| 22:00 | 03:00 | 22.7 | 24 | 0.08 | 3.9 | S | 90 | 1013 |
| 23:00 | 04:00 | 22.2 | 23.4 | 0.06 | 4 | SSW | 90 | 1013 |
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
- Marshalltown — 42.000°, -93.000°, ERA5 grid cell center, 9.4 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 1 September 2018 specifically — not a monthly average. See the Marshalltown 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 (2026-07-17). Historical climate data for Marshalltown, United States (42.00°N, 93.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Marshalltown, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Marshalltown, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Marshalltown, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.