North Bay, Ont. — A clear morning in North Bay will not last. Environment Canada guidance shows cloud cover building toward midday, followed by a rising chance of showers late this afternoon and into tonight, with a risk of thunderstorms as winds strengthen from the south and southwest.
Today: sunshine early, then changeable
Temperatures step up from the mid-teens at daybreak to a high near 23°C, with a modest humidex of 25. Skies turn increasingly cloudy around noon. The probability of precipitation climbs to about 30% late in the afternoon. Winds shift and increase, becoming southwesterly near 20 km/h with gusts up to 40 km/h late in the morning. The UV index reaches 8 (very high), so sun protection remains essential despite the early-day clarity.
| Period | Sky/Precipitation | Temp / Humidex | Wind |
|---|---|---|---|
| Today | Sunny early; clouding over; chance of showers late | High 23°C (Humidex 25) | SW ~20 km/h, gusts 40 km/h |
| Tonight | Mainly cloudy; showers likely before morning; risk of a thunderstorm | Low 17°C | South ~20 km/h, gusts 40 km/h, easing late |
| Tuesday | Cloudy; showers likely; risk of a thunderstorm | High 22°C (Humidex 28) | SW ~30 km/h, gusts 50 km/h |
Tonight and Tuesday: higher rain odds and stronger gusts
Clouds hold through the evening. The chance of showers sits near 30% early in the evening and increases to about 60% toward morning. There is a risk of a thunderstorm overnight as a south wind near 20 km/h (gusting to 40 km/h) persists, then eases late. The low settles near 17°C. On Tuesday, expect a predominantly cloudy day with a 60% chance of showers and embedded thunder potential. Winds strengthen further from the southwest at 30 km/h, with gusts near 50 km/h. The high reaches about 22°C, but the humidex of 28 will make it feel warmer.
Midweek outlook: cooler, then a gradual warm-up
By Tuesday night, showers remain a possibility at around 60%, and temperatures dip to 11°C. Wednesday trends cooler under mostly cloudy skies with a 30% chance of showers and a high near 20°C. Cloud breaks arrive Wednesday night with a low near 11°C. A more settled pattern follows:
- Thursday: Mix of sun and cloud, high near 24°C.
- Friday: Variable cloud with about a 40% chance of showers, high near 23°C.
- Saturday: Partly sunny, high around 24°C.
- Sunday: Intervals of sun and cloud, shower chance near 30%, high about 22°C.
For context, typical late-July values in the area are around 25°C for the daytime high and 14°C for the low. This week’s forecast keeps highs close to seasonal early, briefly cooler midweek, then edges back toward normal with a mix of sun and passing showers.
What this means and how to prepare
Despite a bright start, plan for changing conditions after midday and into Tuesday:
- Sun safety: With a UV of 8, apply broad-spectrum sunscreen, wear a brimmed hat and UV-rated eyewear, and seek shade around midday.
- Thunder risk: If thunder is heard, move indoors. Lightning can strike before rain begins or after it ends.
- Wind-aware: Gusts up to 40–50 km/h can impact cycling and small watercraft; secure loose outdoor items.
- Commuting: Periods of showers could reduce visibility Monday evening through Tuesday—use lights and allow extra stopping distance.
Observed early-morning readings included mainly clear skies, a temperature near 14.6°C, humidity around 86%, pressure 101.4 kPa and rising, visibility roughly 48 km, a dew point close to 12.3°C, and a light southwesterly wind near 8 km/h. These conditions align with a day that warms swiftly ahead of the increasing cloud and approaching showers.
Sunrise was at 5:45 a.m. with sunset near 9:02 p.m., offering a long window for outdoor plans—just keep an eye on the sky and have rain gear ready for late-day and overnight periods.
