Tomorrow's Weather Calgary: Thunderstorms and Rain Showers

Tomorrow's forecast:

Morning: Cloudy Skies with Cool 7°C and Light Winds

    The morning in Calgary begins with overcast skies and a cool temperature near 7°C, accompanied by gentle winds at 16 km/h. The chance of precipitation is low, so the early hours remain mostly dry and calm. Compared to today, temperatures are slightly cooler, setting a mild tone before the afternoon weather shifts.

Activities Recommendations for the morning of May 20, 2026:

• Dog Walks & Errands: Enjoy a calm start with light winds and minimal rain risk for morning outings.

• Bird Watching: Cloudy but dry conditions make it a good time for birding activities on St. Patrick’s Island.

• Cycling: Ideal for a peaceful ride along the Bow River Pathway before afternoon showers.

Temperatures gradually warming from 5°C early morning to 11°C by noon

(Click above to view interactive map)

Afternoon: Thunderstorms Likely with Temperatures Near 12°C

    Afternoon weather turns more dynamic as thunderstorms are likely, bringing a 60% chance of rain and about 1.8 mm precipitation. Temperatures rise to around 12°C with light winds increasing slightly to 19 km/h. This period will be the most active weather-wise, so expect sudden showers and gusts.

Activities Recommendations for the afternoon of May 20, 2026:

• Indoor Events: Consider attending indoor activities like SIX The Musical or the Foundation to Future Exhibition to stay dry.

• Picnic Plans: Postpone or relocate picnics to sheltered areas due to the likelihood of thunderstorms.

• Cycling & Hiking: Best to pause outdoor cycling or hiking during peak storm hours for safety.

Evening: Rain Showers Continue with Cooler 10°C and Light Winds

    Evening brings continued rain showers with a 40% chance of precipitation and temperatures cooling to about 10°C. Winds remain light at 18 km/h, maintaining a steady but wet atmosphere. The rain is expected to be lighter than afternoon storms but still enough to keep outdoor plans dampened.

Activities Recommendations for the evening of May 20, 2026:

• Zoo Visit: Take advantage of the Calgary Zoo’s discounted admission after 3 p.m. but bring rain gear.

• Commute: Prepare for wet roads and possible delays during evening travel.

• Outdoor Dining: Consider indoor dining options as rain showers persist.

Wind speeds increasing slightly from 11 km/h early morning to 18 km/h by noon with light gusts

(Click above to view detailed chart)

Packing preparations for tomorrow:

• Light waterproof jacket or umbrella for afternoon and evening rain

• Layered clothing to adjust from cool morning to milder afternoon temperatures

• Hat and gloves recommended overnight due to frost advisory

• Comfortable shoes suitable for wet conditions

• Moderate UV protection for midday outdoor activities

• Cover plants overnight to protect from frost

For active alerts in your area, visit your Alerts page. This article was generated with the use of OpenAI and The Weather Network's forecast data. The article was reviewed by the editorial team for accuracy and clarity. For more details visit our AI Code of Ethics. For feedback, visit our survey.