Home / Romulus / 17 January 2023
Romulus
United States · 17 January 2023
← 16 January 202318 January 2023 →
Average
5.9°C
low 3°C · high 9°C
Rainfall
0.5mm
dry day
Wind
5m/s
daily average
Humidity
86.3%
daily average
Cloud
96%
cover
Pressure
1002hPa
daily average
The temperature ranged from 3°C around 00:00 to 9°C around 11:00. 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
92th percentile
Low temperature
95th percentile
Rainfall
57th percentile
Wind
79th 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 -3.5°C, versus 5.9°C on this specific day.
Sun & daylight
Sunrise
07:59
Sunset
17:29
Day length
9h 30m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Detroit.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 3°C | -1.4°C | 0.03 | 3.9 | S | 94 | 1004 |
| 01:00 | 06:00 | 3.4°C | -1.1°C | 0.01 | 4.1 | S | 95 | 1003 |
| 02:00 | 07:00 | 3.7°C | -0.6°C | 0.01 | 4 | S | 95 | 1002 |
| 03:00 | 08:00 | 4.4°C | 0.1°C | 0.01 | 4.1 | S | 96 | 1001 |
| 04:00 | 09:00 | 5.2°C | 1.2°C | 0.01 | 4.1 | S | 96 | 1001 |
| 05:00 | 10:00 | 6°C | 2.4°C | 0.04 | 3.6 | SSW | 95 | 1000 |
| 06:00 | 11:00 | 6.4°C | 2.6°C | 0.03 | 4 | SSW | 95 | 1000 |
| 07:00 | 12:00 | 7°C | 3.1°C | 0.01 | 4.3 | SSW | 94 | 1000 |
| 08:00 | 13:00 | 7.7°C | 3.6°C | 0.01 | 4.7 | SSW | 94 | 999 |
| 09:00 | 14:00 | 8.2°C | 4.1°C | 0.01 | 4.9 | SSW | 92 | 1000 |
| 10:00 | 15:00 | 8.9°C | 4.5°C | 0.02 | 5.3 | SSW | 87 | 1000 |
| 11:00 | 16:00 | 9°C | 4.4°C | 0.02 | 5.4 | SW | 82 | 1000 |
| 12:00 | 17:00 | 8.9°C | 3.9°C | 0.01 | 5.6 | SW | 76 | 1000 |
| 13:00 | 18:00 | 8.4°C | 3°C | 0.01 | 5.9 | WSW | 74 | 999 |
| 14:00 | 19:00 | 7.8°C | 2.4°C | 0.01 | 5.7 | WSW | 77 | 999 |
| 15:00 | 20:00 | 7°C | 1.6°C | 0.03 | 5.7 | WSW | 79 | 1000 |
| 16:00 | 21:00 | 6.2°C | 0.7°C | 0.06 | 5.7 | WSW | 81 | 1001 |
| 17:00 | 22:00 | 5.3°C | 0°C | 0.07 | 5.1 | WSW | 79 | 1002 |
| 18:00 | 23:00 | 4.7°C | -0.6°C | 0.07 | 5 | WSW | 81 | 1003 |
| 19:00 | 00:00 | 4.4°C | -1.2°C | 0.04 | 5.6 | WSW | 82 | 1004 |
| 20:00 | 01:00 | 4.3°C | -1.6°C | 0.02 | 5.9 | WSW | 82 | 1005 |
| 21:00 | 02:00 | 4.1°C | -1.8°C | 0.01 | 5.9 | W | 82 | 1005 |
| 22:00 | 03:00 | 3.9°C | -2°C | 0 | 5.8 | W | 83 | 1006 |
| 23:00 | 04:00 | 3.9°C | -2°C | 0 | 5.9 | W | 82 | 1007 |
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
- Romulus — 42.250°, -83.500°, ERA5 grid cell center, 9.1 km from requested point
- Time zone
- America/Detroit
- What's shown here
- The hourly and daily record for 17 January 2023 specifically — not a monthly average. See the Romulus 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 Romulus, United States (42.25°N, 83.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Romulus, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Romulus, 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 Romulus, 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.