Pack the sunscreen — tomorrow’s forecast puts Calgary a full 5°C above the May normal, with mainly sunny skies and 15 hours of daylight to enjoy it. Environment Canada confirms a high of 20°C and north winds gusting to 40 km/h, making this the clearest spring day the city has seen in weeks.

4 related posts

Tomorrow’s High: 20°C · Wind: North 20 km/h gusting to 40 · UV Index: 5 or moderate · Night Conditions: Cloudy · Afternoon Feels Like: 11°C

Quick snapshot

1Tomorrow
27-Day Outlook
  • Temps range from 12°C to 22°C (Environment Canada)
  • Sun and cloud mix midweek (Global News)
  • No weather alerts in effect (Environment Canada)
3How Calgary Compares
  • Tomorrow 5°C above the May normal max of 15°C (Environment Canada)
  • Alberta leads Canadian provinces in annual sunshine hours (Canadian Train Vacations)
4Key Numbers
  • Sunrise 6:06 MDT, sunset 21:01 MDT (Environment Canada)
  • UV index 5 — moderate exposure risk (Environment Canada)
Detail Value Source
Forecast Source weather.gc.ca Environment Canada
Tomorrow High 20°C Environment Canada
UV Index 5 moderate Environment Canada
Wind Gusts 40 km/h Environment Canada
Night Low Feels 32°F Environment Canada

What is the weather in Calgary tomorrow?

Calgary’s forecast for May 3, 2026, shows mainly sunny skies with a high of 20°C — a full 5°C above the seasonal normal max of 15°C for this time of year. Winds will shift to the north at around 20 km/h, with gusts reaching 40 km/h, according to Environment Canada’s official 7-day forecast. Overnight, expect cloudy periods with the temperature dropping to 6°C.

Hourly forecast

For those planning outdoor activities, the daytime hours look most favorable. According to The Weather Network’s hourly breakdown, afternoon temperatures reach 22–23°C under mainly sunny skies — though the feels-like temperature sits closer to 11°C given the north breeze. The UV index of 5 means moderate sun exposure risk, so sunscreen remains worth applying even on a spring day.

Temperature and conditions

Comparing across sources reveals minor variance. While Environment Canada lists Sunday’s high at 20°C, Global News reports 23°C and AccuWeather shows 71°F (22°C) — differences that reflect typical forecasting model variation rather than any disagreement about the overall warm trend. All three sources agree on a mix of sun and cloud for the day.

Wind and UV details

Calgary’s afternoon wind is notable but not severe. Weather Underground’s hourly data recorded winds from the NNW at 15–25 mph, consistent with the north 20 km/h reported by Environment Canada. The UV index peaks at 5 in midday hours, down from the 7–8 range that becomes common by June, according to Environment Canada’s hourly readings.

Bottom line: Outdoor planners should seize tomorrow’s window — the 5°C above-normal high, light winds, and mostly clear skies combine into the kind of spring day Calgarians actually look forward to after months of unpredictable weather.

What is the 7-day weather forecast for Calgary?

Environment Canada’s 7-day outlook shows a stretch of dry, mild weather. Beyond tomorrow’s 20°C high, temperatures fluctuate between 12°C and 22°C across the week, with no precipitation expected.

Day-by-day breakdown

  • Sunday 3 May: Mainly sunny, high 20°C, low 6°C (Environment Canada)
  • Monday 4 May: Sunny, high 12°C, low 0°C (Environment Canada)
  • Tuesday 5 May: Sunny, high 15°C, low 3°C (Environment Canada)
  • Wednesday 6 May: Sunny, high 21°C, low 8°C (Environment Canada)
  • Thursday 7 May: Mix of sun and cloud, high 20°C, low 5°C (Environment Canada)

Weekend outlook

Friday 8 May looks to continue the pattern — a mix of sun and cloud with a high around 22°C. The Weather Network’s 7-day forecast suggests overnight lows generally stay above freezing, dropping to 6°C Sunday night before dipping to -2°C Monday night. Global News confirms the warming trend with Wednesday reaching 24°C under sunny skies.

Bottom line: Residents who layer up in the mornings can enjoy mild afternoons all week — Calgary’s reputation for fickle springs finally gives way to a stretch of reliably warm, dry days.

Does Calgary have a lot of snow?

Calgary’s snowfall has declined in recent years, with the city averaging around 130 cm annually — less than the 200 cm that fell in heavier winters decades ago. AccuWeather’s 10-day forecast shows no snow in sight for the next week and a half.

Annual snowfall averages

May typically marks the end of the snow season in Calgary. According to historical patterns reported by The Weather Network, significant snowfall after mid-April becomes increasingly rare. Current forecasts show 30% precipitation chances but no accumulation expected through the first week of May.

Snow report sources

Real-time snow reports are available through Weather Underground and The Weather Network, though at this point in the season, they’re likely reporting zero accumulation rather than active snowfall.

The upshot

Snow season has effectively closed for Calgary. Anyone arriving from the US — particularly the northern states — will find the weather far milder than what they’d left behind.

What is the coldest month in Calgary?

January holds the title of Calgary’s coldest month, with average highs around -2°C and lows plunging to -13°C. Calgary Housing advises residents to prepare for wind chills as severe as -25°C during these periods.

Winter temperature trends

Calgary’s winters are paradoxically mild compared to provinces like Manitoba or Saskatchewan — the chinook winds that sweep down from the Rockies can raise temperatures by 15°C in hours. However, without chinooks, overnight lows in December and January routinely drop below -15°C, according to Environment Canada’s historical normals.

Cold weather reminders

For those considering a move to Calgary from warmer climates, Calgary Housing issues seasonal reminders about insulated pipes, emergency heating plans, and proper vehicle maintenance — practical wisdom that newcomers often underestimate until their first real chinook lull.

Why this matters

If you’re relocating from the US sunbelt, Calgary’s summer is genuinely enjoyable — but its winters demand real preparation. Unlike Arizona or Florida, there’s no “taking a break” from the cold for several months each year.

Which month is best to visit Calgary?

Late June through August offers the warmest temperatures, longest days, and full access to outdoor attractions. June and July average highs of 20–23°C with 16+ hours of daylight, making them ideal for hiking, festivals, and Banff National Park excursions.

Optimal weather periods

Canadian Train Vacations recommends May through September for first-time visitors, with the trade-off that shoulder seasons (May, early October) offer fewer crowds but shorter daylight hours. Alberta’s position as Canada’s sunniest province — over 300 sunny days annually — means even off-peak months see substantial daylight.

Sunshine highlights

Alberta genuinely earns its reputation. Canadian Train Vacations notes that the province outranks every other Canadian jurisdiction in annual sunshine hours — a fact that surprises many who associate Alberta with harsh winters rather than brilliant summers. Sunrise tomorrow at 6:06 MDT and sunset at 21:01 MDT gives nearly 15 hours of daylight, according to Environment Canada.

The trade-off

Summer visitors get warmth and long days but higher hotel prices and crowded attractions. The current early-May window delivers 70–80% of the sunshine with a fraction of the crowds — and tomorrow’s 20°C high shows spring in Calgary can already feel like summer to anyone from cooler climates.

Timeline

Time Conditions Source
Tomorrow morning Cloudy with sunny breaks, 8°C feels 5°C Environment Canada
Tomorrow afternoon Mix of sun and clouds, 13°C feels 11°C The Weather Network
Next 7 days Mainly sunny to showers, temps varying 12–22°C Environment Canada

What experts say

Mainly sunny. Wind becoming north 20 km/h gusting to 40 in the morning. High 20.— Environment Canada (Official Forecaster)

Highs 22 to 24°C and lows 5 to 7°C.— Global News (Local Meteorologist)

Related reading: Freezing Rain Warning · BC Hydro Power Outage

Additional sources

weather.gc.ca, weather.gc.ca

While Environment Canada predicts sunny skies and 20°C highs tomorrow in Calgary, the 14°C high outlook forecasts a cooler 14°C peak with no rain overnight.

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Frequently asked questions

What is the current weather in Calgary today?

As of the latest reading, Calgary is reporting around 12°C under a mix of sun and clouds, with humidity at 43% and light winds from the SSW, according to Global News.

Will there be snow in Calgary tomorrow?

No snow is expected tomorrow or over the next week. Current forecasts from Environment Canada and AccuWeather show clear conditions with temperatures above freezing.

What is the long-range forecast for Calgary winter?

Winter in Calgary runs from November through March, with January averaging -2°C highs and -13°C lows. Environment Canada’s normals show chinook winds can interrupt cold spells, but without them, wind chills regularly reach -25°C.

How sunny is Alberta compared to other provinces?

Alberta leads Canada with over 300 sunny days per year, according to Canadian Train Vacations. Tomorrow’s forecast — with sunrise at 6:06 MDT and sunset at 21:01 MDT — provides nearly 15 hours of daylight.

What are Calgary’s average winter temperatures?

January averages -2°C during the day and -13°C at night, according to Environment Canada. Without chinook winds, overnight lows can drop to -20°C or lower, with wind chills making it feel closer to -30°C.

Is Calgary a good place for expats from the US?

Calgary attracts US expatriates for its high wages, relatively affordable housing compared to Vancouver or Toronto, and easy access to the Rocky Mountains. The main drawback is winter — even mild-seeming days can surprise newcomers with rapid temperature drops once the sun sets.

What is the UV index for Calgary tomorrow?

The UV index for Calgary tomorrow is forecast at 5 — moderate — according to Environment Canada. This means sensible sun protection (sunscreen, sunglasses) is recommended for extended outdoor activities.

For anyone with plans in Calgary tomorrow — whether a morning jog, an afternoon meeting, or a weekend road trip toward the mountains — the forecast delivers. Warmer than average, dry, and with only moderate wind, it checks every box for getting outside. The question isn’t whether to go — it’s what to do with 15 hours of daylight.