Weather in Calgary in July

Prime time. July is about as good as Calgary gets. Highs average 25 °C, lows 11.2 °C, and rain falls on 12 days — nothing in the month is working against you.

July ranks 3 of 12 in Calgary. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 12 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: 4 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest July day reached 36.7 °C and the coldest night fell to 3.9 °C, and the wettest single day dropped 30 mm — roughly 52% of the month's rain in one day.

July is moderately variable: 16 mm in the driest year against 133 mm in the wettest, around an average of 58 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind is light at 3.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 62%.

How July sits in the year

Temperatures hold steady either side: 20.1 °C in June, 25 here, 24.2 in August. Nothing about the timing within the month matters much. Rain has already shifted: 5 days fewer than June had.

Daylight in July

July is at or near the longest days of Calgary's year: 16.1 hours of daylight, losing 1 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

With no coast nearby, the year swings a fair way — 35 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 1048 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Calgary versus nearby

If Calgary is one option among several, the nearby comparison is worth making. Banff is close enough to be a coin toss — 4.2 °C cooler, 3 days more rain. Lethbridge is close enough to be a coin toss — 2.7 °C warmer, 4 days less rain.

So: July is effectively as good as it gets here — 4 points behind August, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Calgary

See all twelve months in Calgary, or where else to go in July.