worldweather8°Cexceptionally cool
usually 15°C–25°C
cooler than 96% of similar days
night: exceptionally warm
rain: more rain than usual
wind: stronger than usual
Weather in Calgary - 14-day forecast
Detailed weather forecast for Calgary, Canada: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Calgary
today🌧️
8°💧 2.2 mm
Sun🌧️
17°💧 0.5 mm
Mon🌧️
13°💧 2 mm
Tue🌧️
18°💧 3.4 mm
Wed☀️
21°💧 0.4 mm
Thu☀️
24°💧 8.9 mm
Fri🌧️
11°💧 0.2 mm
Sat🌤️
15°💧 0.3 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Calgary, the forecast high is 8°C. Typical daytime temperatures at this time of year range from 15°C to 25°C, so it will be exceptionally cool. It is cooler than 96% of similar days.
17°Cnear normal
usually 14°C–24°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
13°Ccooler than usual
usually 14°C–24°C
cooler than 85% of similar days
night: exceptionally warm
rain: more rain than usual
wind: exceptionally strong
18°Cnear normal
usually 14°C–24°C
night: exceptionally warm
rain: more rain than usual
wind: typical
21°Cnear normal
usually 14°C–24°C
night: exceptionally warm
rain: typical rainfall
wind: lighter than usual
24°Cwarmer than usual
usually 13°C–24°C
warmer than 81% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: exceptionally strong
11°Ccooler than usual
usually 13°C–24°C
cooler than 87% of similar days
night: warmer than usual
rain: typical rainfall
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 19°C by day. The coolest year was 1985 (9°C) and the warmest was 2017 (27°C). The current forecast averages 16°C - lower than in 69% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Calgary
Calgary 30 & 45-day weather - long-range outlook
Next 15 days · forecast
11°
around 8° at night · days with rain: 5
Weeks 3-4 · avg for September
17°
around 5° at night · rain chance 0%
Weeks 5-7 · avg for October
12°
around 0° at night · rain chance 0%
The 30 & 45-day outlook for Calgary: the next 15 days are a numerical forecast updated daily - on average 11° by day and 8° at night. Further out we rely on multi-year climate averages: around 17° in September, and about 12° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Calgary
Saturday5 September 2026
🌧️8°moderate rain
Sunday6 September 2026
🌧️17°light rain
Monday7 September 2026
🌧️13°light rain
Tuesday8 September 2026
🌧️18°light rain
Wednesday9 September 2026
☀️21°clear sky
Thursday10 September 2026
☀️24°clear sky
Friday11 September 2026
🌧️11°light rain
Saturday12 September 2026
🌤️15°scattered clouds
Sunday13 September 2026
🌤️16°scattered clouds
Monday14 September 2026
🌧️10°light rain
Tuesday15 September 2026
🌨️1°snow
Wednesday16 September 2026
☁️1°overcast clouds
Thursday17 September 2026
☁️1°overcast clouds
Friday18 September 2026
☁️5°broken clouds
Saturday19 September 2026
☁️10°overcast clouds
UV index in Calgary - is it safe to sunbathe?
Today the UV index in Calgary is 1 (low). You can safely stay outside. Sunscreen only matters for very long exposure.
Air quality and smog in Calgary
Air quality in Calgary is currently very good. Fine particulate PM2.5: 7.8 µg/m³, PM10: 9.6 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Calgary | 7.8 | 9.6 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-04, 21:00).
Calgary weather through the year
Warmest, driest months on average: May, June, July, August.
Upcoming public holidays in Canada: Labour Day — 7 September · National Day for Truth and Reconciliation — 30 September · Thanksgiving — 12 October.
Nearby and related places
FAQ - Calgary weather
What is the weather like in Calgary today?
Today it is about 8° during the day and 12° at night, moderate rain.
How far ahead can I check the forecast for Calgary?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.