Sunshine Starts the Show, But Winter Isn’t Done Just Yet in Northwestern Ontario
Forecast for Sunday, April 13, 2025
Sioux Lookout and Pickle Lake are waking up under clear skies and crisp spring air this Sunday morning. As of 6:00 AM CDT, the temperature at Sioux Lookout Airport is a brisk -2.5°C, with 100% humidity giving that frosty edge to the morning. Winds are currently calm, offering a peaceful start to the day, and visibility stretches a full 24 kilometres—great for spotting those elusive early-morning sunrises. The barometric pressure is at 101.0 kPa but is falling, hinting at changes coming our way.
This morning features a golden slice of spring, with fog patches set to vanish and skies staying sunny before cloud cover builds early this afternoon. Expect a pleasant high of 11°C—warm enough to consider ditching the parka, but don’t let that fool you into packing it away just yet. There’s a light breeze expected at up to 15 km/h and a moderate UV index of 5, so if you’re out enjoying the sun, a little sunscreen might go a long way.
Tonight, things take a turn back toward winter, with increasing cloudiness and a 40% chance of flurries overnight. Winds will shift from the north at 20 km/h after midnight, and the temperature will slide down to -2°C.
Monday Brings Back Winter with Wind and Snow
Monday, April 14, is shaping up to be a bit of a snow globe scenario for Sioux Lookout and Pickle Lake. Light flurries are expected in the morning, tapering off in the afternoon, but clouds will linger. Temperatures will remain cold, with a high of just +1°C, and a stiff north wind at 30 km/h gusting to 50 will add a biting wind chill of -8°C in the morning. The UV index will drop to a low 2, and so will your motivation to be outdoors.
Monday night doesn’t bring much relief either. Expect continued cloudy skies with a 60% chance of snow, gusty winds, and an overnight low of -7°C.
Midweek Tease of Spring
Tuesday, April 15, offers a mix of sun and cloud with a 30% chance of light flurries and a slightly warmer high of +4°C. Skies clear overnight, but the temperature dives again to a very chilly -11°C—this is your cue to keep the fleece bedding a while longer.
By Wednesday, April 16, full-on sunshine returns with a high of +7°C, a welcome turn after the Monday mess. However, the night ushers in cloud cover and a 30% chance of either rain showers or flurries. The overnight low will hover around -5°C.
What to Wear in Sioux Lookout and Pickle Lake This Week
This is a classic “dress in layers” week. Start with something warm in the mornings, swap into something lighter for the daytime highs, and make sure you have a wind-resistant jacket for those gusty afternoons. Don’t pack away the winter boots or gloves just yet—Monday’s snow and wind will definitely call for full winter wear.
Sioux Lookout Weather Trivia
Did you know? Sioux Lookout once held the distinction of being the coldest place in Ontario during April back in 1982, clocking in at a numbing -27.2°C! Thankfully, this April is a bit more forgiving—although not entirely snow-free!
Historic High for April 13 in Sioux Lookout: 21.6°C (1987)
Historic Low for April 13 in Sioux Lookout: -16.5°C (1950)
