A Cool, Cloudy Kickoff to May with a Sneaky Spring Chill
Thursday, May 1, 2025 – A Soggy Start with a Frosty Finish
Sioux Lookout greets May Day with a mostly cloudy sky and saturated conditions. As of 5:00 AM at the Sioux Lookout Airport, the temperature sits at a damp 2.5°C with the dew point matching exactly—no wonder the humidity is sitting at a full 100%. Visibility is good at 24 km, despite fog patches lingering in the early morning hours. Winds are calm now from the north-northeast at 4 km/h, but brace yourself—they’ll pick up soon.
Barometric pressure is at 101.4 kPa and rising, but don’t let that fool you into thinking sunshine is on the horizon just yet. Showers are on the menu today, and those dissipating fog patches will give way to steady rain as the morning unfolds. Winds will increase from the northeast at 20 km/h, gusting to 40, adding a little extra bite to the drizzle. The temperature is expected to hit a high of 7°C, but will fall to just 3°C by late afternoon, making it feel even chillier than it looks. The UV index sits at a moderate 3—not exactly tanning weather.
Tonight: Showers Fade, Flurries May Sneak In
Tonight, the rain showers will ease off near midnight, but the skies won’t clear. Instead, there’s a 60 percent chance of flurries sneaking in, particularly in the early hours of Friday. Winds will remain northeast at 20 km/h, gusting to 40, before becoming light after midnight. The low dips to -1°C, with a wind chill making it feel closer to -5°C. Winter’s not done teasing just yet.
Friday and the Weekend: The Return of Sunshine (Eventually)
Friday, May 2, kicks off with a chance of early flurries before giving way to a mix of sun and cloud. Winds will be calm, topping out at 15 km/h. Morning wind chills will hover around -5°C before the day warms to a more pleasant 8°C. The UV index nudges up to 5—moderate enough to warrant some sun protection if you’re out for long.
Friday night brings clearing skies and a crisp low of -4°C. But hang tight—Saturday brings full spring glory with a mix of sun and cloud and a daytime high soaring to 17°C! Saturday night continues the trend with clear skies and a low of 0°C.
Historic Weather: Spring’s Subtle Start
On this day in Sioux Lookout’s history, the warmest May 1 recorded reached 21.3°C back in 1987. On the flip side, the coldest plunged to a teeth-chattering -10.6°C in 1966. This year’s reading might not break any records, but it sure leans closer to parka than picnic.
What to Wear?
You’ll need your waterproof outerwear for the showers, and a warm inner layer as temperatures dip this afternoon. Gloves and a windproof hat aren’t a bad idea tonight when that chilly wind picks up and flurries flirt with the region.
Weather Trivia: Foggy Fame
Sioux Lookout may not top the charts in snowfall, but it earns foggy bragging rights! Thanks to its proximity to vast lakes and forests, fog is a regular springtime guest, often showing up with coffee and staying past lunch.
