Frosty Start to a Warm Holiday Weekend in Armstrong

ARMSTRONG – Weather – As the sday gets underway on Armstrong this morning, temperatures have dipped just below freezing, prompting a Frost Advisory for the area — including Armstrong, Auden, and Wabakimi Park.

While the start to the day is chilly enough to threaten sensitive crops and garden plants, the outlook for the Labour Day weekend is warm, dry, and picture-perfect for outdoor activities.

Today’s Weather Overview

Current Conditions

Observed at: Armstrong Airport
Time: 7:22 AM EDT, Thursday, August 28, 2025

• Temperature: -0.8°C

• Condition: Sunny

• Wind: Calm

• Humidity: 97%

• Dew Point: -1.2°C

• Pressure: 102.4 kPa

• Visibility: 16 km

A rare late-August cold snap has gripped Armstrong this morning, with temperatures falling just below the freezing mark. With calm winds and clear skies overnight, conditions were ideal for radiational cooling, allowing frost to form in low-lying and open areas.

Frost Advisory in Effect

Gardeners and farmers are advised to take protective measures for any frost-sensitive vegetation. Cover plants and consider delaying early morning irrigation to avoid worsening freeze damage.

Today’s High: 18°C
UV Index: 6 or High — sun protection is recommended, even with the cool start.

Tonight: Skies remain clear with fog patches developing after midnight. Overnight low: +4°C.

Heading to the Long Weekend

Expected Conditions

Friday, August 29:
Mainly sunny once again with morning fog patches dissipating. A warming trend begins with a high of 22°C. The UV index remains at 6 or high.

Friday Night: Clear skies continue with an overnight low of 7°C.

Saturday, August 30:
An ideal late-summer day: sunny with a high of 27°C. Light winds and low humidity will make it perfect for any outdoor events or time at the lake.

Saturday Night: Clear with a low of 7°C.

Sunday, August 31:
Another sunny day, this time warming up to a high of 28°C — ideal for long weekend festivities.

Sunday Night: Clear skies continue with temperatures holding mild at 14°C overnight.

Labour Day, Monday, September 1:
A few more clouds in the mix but still a beautiful day. Expect a mix of sun and cloud with a high near 27°C.

Monday Night: Becoming cloudy. Overnight low of 13°C.

Wardrobe Recommendations

• Today: Dress in layers — start your morning with a warm coat, gloves, and hat if you’re heading out early. By afternoon, a light sweater or long sleeve will suffice.

• Friday to Sunday: Bring out the summer wardrobe — t-shirts, shorts, and sunglasses. Mornings may still be cool, so keep a sweater handy.

• Labour Day Monday: A few clouds might cool things slightly, so a light jacket is a good idea, especially in the evening.

Weather Trivia

Did You Know?
Frost can occur even when official air temperatures are above 0°C. That’s because temperature readings are typically taken at about 1.5 to 2 metres above the ground. At ground level, heat escapes faster during clear, calm nights, especially in rural areas — making the soil surface much colder than the air just above it. This is why frost can sneak in under seemingly mild conditions!