Precipitation in Signal Hill trails that of 82% of Canadian towns: 445 mm a year
High summer brings afternoon highs near 23.5°C. Summers stay cool: July afternoons here are cooler than in 80% of Canadian towns. June is the wettest month, January the driest. Plan time outside for July and August, when highs sit at 23–24°C.
Figures: ECCC’s 1991–2020 normals for Calgary (Airport) (15 km north-east).
A year in Signal Hill at a glance
Each month’s typical high and low, in °C.
What stands out about Signal Hill’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Signal Hill feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
193 frost days and 87 days above 20°C a year
From September to May frost is routine, and in December it comes on almost every night. On about 22 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
445 mm of precipitation in a typical year
Some 72 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 139 cm of snow a year
The snow season runs September to May; March brings the most, about 24 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Signal Hill
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
A heating degree day is one degree of shortfall below 18°C for one day, summed over the year. In heating terms, homes need more heating than 68% of Canadian towns.
Living with Signal Hill’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Gardens get from about 21 May to 18 September without frost, around 119 days in all.
Highs of 17–27°C with nights of 8°C or more come in Jul and Aug.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 42 days a year.
Count on some 9 humid days a year with the humidex past 30.
Thirty years of averages say little about one bad storm; Signal Hill’s hazards page does.
Flood & hazards →ECCC’s normals location: Calgary (Airport)
ECCC builds the Calgary (Airport) normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 15 km north-east |
| Station altitude | 1,099 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −39.7°C |
| Hottest reading, 1991–2020 | 36.5°C |
| Average wind | 13.8 km/h on average, most often from the south |
| Next-nearest location | Sundre, 91 km |
How Signal Hill compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Alberta.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Signal Hill’s would only repeat its figures. Distances here run 50–70 km: that is how far the nearest places with figures are from Signal Hill.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Signal Hill Calgary (Airport) | 23.5°C | −13.5°C | 445 mm |
| Stoney 142, 143, 144 50 km · Banff | 22.5°C 1.0°C cooler | −13.5°C about the same | 454 mm |
| Carstairs 59 km · Sundre | 22.8°C 0.7°C cooler | −18.0°C 4.5°C colder | 496 mm |
| Wheatland County 66 km · Queenstown | 25.0°C 1.5°C warmer | −13.7°C about the same | 412 mm |
Signal Hill weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −1.5°C | −13.5°C | −7.6°C | 10 mm | 17 cm |
| February | 0.1°C | −11.8°C | −5.9°C | 12 mm | 17 cm |
| March | 3.8°C | −8.1°C | −2.2°C | 18 mm | 24 cm |
| April | 10.8°C | −1.9°C | 4.5°C | 30 mm | 23 cm |
| May | 16.4°C | 3.4°C | 9.9°C | 61 mm | 10 cm |
| June | 19.7°C | 7.7°C | 13.7°C | 113 mm | under 1 cm |
| July | 23.5°C | 10.2°C | 16.9°C | 66 mm | 0 cm |
| August | 23.1°C | 9.2°C | 16.2°C | 54 mm | 0 cm |
| September | 18.3°C | 4.7°C | 11.5°C | 37 mm | 2 cm |
| October | 11.1°C | −1.3°C | 4.9°C | 17 mm | 12 cm |
| November | 4.1°C | −7.5°C | −1.7°C | 16 mm | 19 cm |
| December | −0.4°C | −12.1°C | −6.3°C | 13 mm | 16 cm |
| Year | 10.8°C | −1.8°C | 4.5°C | 445 mm | 139 cm |
February varies most from one year to the next (4.1°C), June least
Each bar spans a month’s coldest and warmest readings over thirty years; December’s run from −38.2°C in 1996 to 19.5°C in 1999.
Where Signal Hill’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Calgary (Airport) from ECCC’s climate data site, the nearest location with every month of temperature.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Signal Hill’s climate
How warm does Signal Hill get in summer?
Midsummer means July, with afternoons near 23.5°C on a typical day.
How cold does Signal Hill get in winter?
A typical January night falls to −13.5°C, the year’s low point.
How much rain and snow does Signal Hill get?
Around 445 mm a year in all, from 113 mm in June down to 10 mm in January.
How long does snow stay on the ground?
About 93 days a year count as snow-covered, with 1 cm or more.
Are these figures for Signal Hill itself?
Almost: ECCC’s Calgary (Airport) location, which gives these figures, lies a short way outside Signal Hill.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Signal Hill →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).