Home / Romulus / 15 January 2018
Romulus
United States · 15 January 2018
← 14 January 201816 January 2018 →
Average
-7.7°C
low -9.2°C · high -6.3°C
Rainfall
2.8mm
rain recorded
Wind
3.1m/s
daily average
Humidity
77.1%
daily average
Cloud
98%
cover
Pressure
1029hPa
daily average
The temperature ranged from -9.2°C around 00:00 to -6.3°C around 17:00. Rain was recorded across 15 hours, from around 04:00 to 18:00 (2.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
12th percentile
Low temperature
30th percentile
Rainfall
81th percentile
Wind
31th 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 -3.1°C, versus -7.7°C on this specific day.
Sun & daylight
Sunrise
08:00
Sunset
17:27
Day length
9h 27m
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 | -9.2°C | -15.1°C | 0 | 3.6 | SSE | 62 | 1034 |
| 01:00 | 06:00 | -8.9°C | -14.8°C | 0.01 | 3.6 | SSE | 61 | 1033 |
| 02:00 | 07:00 | -8.9°C | -14.7°C | 0.03 | 3.5 | SSE | 62 | 1033 |
| 03:00 | 08:00 | -8.6°C | -14.5°C | 0.07 | 3.7 | SSE | 64 | 1032 |
| 04:00 | 09:00 | -8.7°C | -14.6°C | 0.12 | 3.7 | SE | 67 | 1032 |
| 05:00 | 10:00 | -8.6°C | -14.5°C | 0.17 | 3.7 | SE | 70 | 1031 |
| 06:00 | 11:00 | -8.7°C | -14.8°C | 0.19 | 4.1 | SE | 73 | 1030 |
| 07:00 | 12:00 | -8.7°C | -14.8°C | 0.17 | 4.1 | SE | 74 | 1030 |
| 08:00 | 13:00 | -8.7°C | -14.9°C | 0.16 | 4.2 | SE | 77 | 1030 |
| 09:00 | 14:00 | -8.4°C | -14.9°C | 0.18 | 4.7 | SE | 76 | 1029 |
| 10:00 | 15:00 | -7.7°C | -14.1°C | 0.23 | 4.7 | SE | 76 | 1029 |
| 11:00 | 16:00 | -7.4°C | -13.7°C | 0.25 | 4.5 | SE | 76 | 1029 |
| 12:00 | 17:00 | -6.7°C | -12.8°C | 0.18 | 4.4 | SE | 76 | 1028 |
| 13:00 | 18:00 | -6.5°C | -12.4°C | 0.19 | 4.1 | SE | 77 | 1026 |
| 14:00 | 19:00 | -7°C | -12.7°C | 0.19 | 3.8 | SSE | 82 | 1025 |
| 15:00 | 20:00 | -6.8°C | -12.2°C | 0.17 | 3.4 | SSE | 83 | 1025 |
| 16:00 | 21:00 | -6.6°C | -11.7°C | 0.16 | 3 | SSE | 83 | 1025 |
| 17:00 | 22:00 | -6.3°C | -10.5°C | 0.14 | 1.8 | S | 83 | 1026 |
| 18:00 | 23:00 | -6.4°C | -10.2°C | 0.1 | 1.2 | SSE | 86 | 1026 |
| 19:00 | 00:00 | -6.6°C | -10.2°C | 0.05 | 1.1 | S | 87 | 1026 |
| 20:00 | 01:00 | -6.7°C | -9.8°C | 0.02 | 0.3 | S | 88 | 1026 |
| 21:00 | 02:00 | -6.8°C | -10.2°C | 0.01 | 0.6 | SW | 88 | 1027 |
| 22:00 | 03:00 | -7.4°C | -10.9°C | 0.01 | 0.8 | WSW | 89 | 1027 |
| 23:00 | 04:00 | -8.3°C | -12.5°C | 0.01 | 1.7 | WSW | 90 | 1027 |
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 15 January 2018 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 (2026-07-19). 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 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Romulus, 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 Romulus, 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.