Home / St Johnsbury / 17 December 2017
St Johnsbury
United States · 17 December 2017
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Average
-14.8°C
low -19.1° · high -10.4°
Rainfall
0.1mm
dry day
Wind
2.1m/s
daily average
Humidity
77.9%
daily average
Cloud
90%
cover
Pressure
1026hPa
daily average
The temperature ranged from -19.1°C around 21:00 to -10.4°C around 13:00. 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
4th percentile
Low temperature
11th percentile
Rainfall
31th percentile
Wind
21th 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 -4.9°C, versus -14.8°C on this specific day.
Sun & daylight
Sunrise
07:19
Sunset
16:09
Day length
8h 50m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
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 | -13.7 | -18.7 | 0.02 | 2.3 | NW | 86 | 1023 |
| 01:00 | 06:00 | -12.8 | -17.7 | 0.02 | 2.2 | NW | 85 | 1024 |
| 02:00 | 07:00 | -11.8 | -16.6 | 0.01 | 2.2 | NW | 83 | 1024 |
| 03:00 | 08:00 | -12.4 | -17.1 | 0.01 | 1.9 | NW | 84 | 1025 |
| 04:00 | 09:00 | -12.7 | -17.3 | 0.01 | 1.8 | NW | 84 | 1025 |
| 05:00 | 10:00 | -16.5 | -21.9 | 0 | 2.6 | NW | 87 | 1025 |
| 06:00 | 11:00 | -18 | -23.5 | 0 | 2.6 | NW | 88 | 1026 |
| 07:00 | 12:00 | -18.9 | -24.3 | 0 | 2.5 | NW | 89 | 1026 |
| 08:00 | 13:00 | -18.3 | -23.8 | 0 | 2.6 | NW | 86 | 1026 |
| 09:00 | 14:00 | -16.6 | -21.3 | 0 | 1.6 | NW | 81 | 1027 |
| 10:00 | 15:00 | -13.2 | -18.1 | 0 | 2.1 | NW | 74 | 1027 |
| 11:00 | 16:00 | -12.6 | -18.1 | 0 | 2.9 | NW | 72 | 1028 |
| 12:00 | 17:00 | -10.5 | -15.9 | 0 | 2.8 | NW | 64 | 1027 |
| 13:00 | 18:00 | -10.4 | -15.8 | 0 | 2.7 | NW | 63 | 1026 |
| 14:00 | 19:00 | -10.6 | -15.9 | 0 | 2.6 | NW | 63 | 1026 |
| 15:00 | 20:00 | -11.3 | -16.4 | 0 | 2.3 | NW | 66 | 1026 |
| 16:00 | 21:00 | -12.4 | -17.2 | 0 | 2 | NW | 74 | 1027 |
| 17:00 | 22:00 | -15 | -19.8 | 0 | 1.8 | NNW | 76 | 1027 |
| 18:00 | 23:00 | -17 | -21.9 | 0 | 1.8 | NNW | 77 | 1027 |
| 19:00 | 00:00 | -17.9 | -23 | 0 | 2.1 | NNW | 77 | 1027 |
| 20:00 | 01:00 | -18.2 | -23.2 | 0 | 2 | NNE | 77 | 1027 |
| 21:00 | 02:00 | -19.1 | -23.6 | 0 | 1.1 | NNE | 78 | 1027 |
| 22:00 | 03:00 | -17.6 | -21.3 | 0 | 0.2 | NNW | 76 | 1027 |
| 23:00 | 04:00 | -18.3 | -22.1 | 0 | 0.2 | NNE | 77 | 1026 |
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
- St Johnsbury — 44.500°, -72.000°, ERA5 grid cell center, 8.4 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 17 December 2017 specifically — not a monthly average. See the St Johnsbury 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 St Johnsbury, United States (44.50°N, 72.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for St Johnsbury, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for St Johnsbury, 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 St Johnsbury, 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.