Climate averages 1991–2020
Nepean weather
in January.
A freezing month with moderate precipitation: the coolest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a freezing month in Nepean: daytime highs average -4.8°C and nights cool to about -14.6°C. By daytime temperature it is the coolest month of the year.
Expect about 70 mm of precipitation on roughly 10 days, which makes January a month with moderate precipitation (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 10 min on an average January day.
The nearest other city in this atlas is Gloucester, Canada (7 km away). In January its highs average -5.1°C, about as warm as Nepean, with 70 mm of precipitation.
Among the 86 cities listed in Canada, Nepean ranks joint 58th of 86 for the warmest January highs and joint 39th of 86 for the driest January (precipitation, lowest first). The mean January high of those 86 cities is -2.3°C; Nepean is 2.5°C cooler than that mean.
From January to February, average highs rise by 1.8°C to -3.0°C, and monthly precipitation falls from 70 mm to 57 mm.
The annual picture
January in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Nepean climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | -4.8°C-14.6°C | -14.6°C | 70 | 10.4 | 9.29 h |
| February | -3.0°C-13.4°C | -13.4°C | 57 | 8.9 | 10.410 h |
| March | 2.7°C-7.5°C | -7.5°C | 71 | 10.2 | 11.912 h |
| April | 10.7°C0.3°C | 0.3°C | 92 | 11.3 | 13.513 h |
| May | 18.4°C7.7°C | 7.7°C | 85 | 11.3 | 14.915 h |
| June | 23.3°C13.3°C | 13.3°C | 95 | 11.3 | 15.616 h |
| July | 25.7°C16.3°C | 16.3°C | 94 | 11.7 | 15.315 h |
| August | 24.5°C15.7°C | 15.7°C | 86 | 10.8 | 14.114 h |
| September | 20.4°C11.8°C | 11.8°C | 90 | 9.9 | 12.613 h |
| October | 12.8°C5.4°C | 5.4°C | 97 | 11.7 | 11.011 h |
| November | 5.5°C-1.0°C | -1.0°C | 80 | 11.1 | 9.610 h |
| December | -1.1°C-8.4°C | -8.4°C | 76 | 11.5 | 8.89 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Gloucester, Canada in JanuaryCanada · 7 kmHigh -5.1°C · Low -14.7°C · 70 mm precipitation
- Ottawa in JanuaryCanada · 9 kmHigh -5.0°C · Low -14.2°C · 73 mm precipitation
- Kanata in JanuaryCanada · 16 kmHigh -4.9°C · Low -14.7°C · 68 mm precipitation
- Gatineau in JanuaryCanada · 16 kmHigh -5.1°C · Low -14.5°C · 73 mm precipitation
- Orléans, Canada in JanuaryCanada · 22 kmHigh -5.5°C · Low -14.6°C · 74 mm precipitation
- Kingston, Canada in JanuaryCanada · 137 kmHigh -2.6°C · Low -9.4°C · 74 mm precipitation
- Pierrefonds-Roxboro in JanuaryCanada · 148 kmHigh -5.3°C · Low -13.3°C · 74 mm precipitation
- Saint-Louis-de-Terrebonne in JanuaryCanada · 156 kmHigh -5.7°C · Low -15.1°C · 76 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Nepean) is explained once on the Nepean year overview and on the Sources, method and limits page.
Gloucester, Canada lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.