Photo: J Hazard · CC BY-SA 3.0Armstrong sits near the bottom of Canadian towns for winter warmth
High summer brings afternoon highs near 25.3°C. Some 48°C separates winter nights from summer afternoons. Counting rain and snow together, it is drier than 75% of Canadian towns. Garden chairs stay out from June to August, the months with highs of 22–25°C.
These are not Armstrong’s own readings: ECCC keeps no normals there, so the page uses Gimli, 24 km north-east.
A year in Armstrong at a glance
Each month’s typical high and low, in °C.
What stands out about Armstrong’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in Armstrong feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 195 days, 20°C on 99
From September to May frost is routine, and in January it comes on almost every night. Deep cold, under −20°C, comes on about 56 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 517 mm of rain and snow a year
June brings the most rain and snow; February, the least. Some 79 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
About 126 cm of snow a year
The snow season runs October to May; December brings the most, about 27 cm.
Snowfall by month
Centimetres
Snowfall: Winnipeg Richardson (Airport), 70 km away (Gimli records no complete year of it).
Heating a home in Armstrong
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C. Over a year, a home here needs more heating than 96% of Canadian towns.
Living with Armstrong’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Plant out after about 25 May; the first frost of autumn usually arrives near 27 September, leaving roughly 124 days without frost.
The outdoor season by the averages is Jun, Jul and Aug, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Bad-weather days, from blizzards to floods, get their own page for Armstrong: the hazards page.
Flood & hazards →ECCC’s normals location: Gimli
ECCC builds the Gimli normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 24 km north-east |
| Station altitude | 223 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Winnipeg Richardson (Airport), 70 km |
| Coldest reading, 1991–2020 | −45.0°C |
| Hottest reading, 1991–2020 | 37.0°C |
| Next-nearest location | Winnipeg Richardson (Airport), 70 km |
How Armstrong 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 Manitoba.
Nearby towns’ climate
Places around Armstrong whose figures come from another normals location. Armstrong has few close neighbours with figures, so the list reaches 38–48 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Armstrong Gimli | 25.3°C | −22.7°C | 517 mm |
| Stony Mountain 38 km · Winnipeg Richardson (Airport) | 25.8°C 0.5°C warmer | −21.2°C 1.5°C milder | 519 mm |
| St. Laurent 46 km · Portage Southport | 25.4°C about the same | −19.1°C 3.6°C milder | 493 mm |
Armstrong 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 | −12.2°C | −22.7°C | −17.5°C | 19 mm | 25 cm |
| February | −9.1°C | −20.5°C | −14.8°C | 12 mm | 12 cm |
| March | −1.2°C | −12.4°C | −6.8°C | 23 mm | 19 cm |
| April | 8.7°C | −3.2°C | 2.7°C | 28 mm | 14 cm |
| May | 16.4°C | 3.7°C | 10.0°C | 61 mm | 4 cm |
| June | 22.4°C | 10.8°C | 16.6°C | 87 mm | 0 cm |
| July | 25.3°C | 13.1°C | 19.2°C | 77 mm | 0 cm |
| August | 24.4°C | 11.8°C | 18.1°C | 70 mm | 0 cm |
| September | 18.9°C | 7.1°C | 13.0°C | 55 mm | 0 cm |
| October | 9.7°C | 0.3°C | 5.0°C | 44 mm | 4 cm |
| November | −0.3°C | −8.7°C | −4.5°C | 23 mm | 21 cm |
| December | −8.6°C | −17.9°C | −13.3°C | 18 mm | 27 cm |
| Year | 7.9°C | −3.2°C | 2.3°C | 517 mm | 126 cm |
March has run from −37.0°C to 24.1°C in thirty years
From one year to the next, December’s average typically shifts by 4.2°C around its normal of −13.3°C, the widest of any month, while July’s shifts by 1.1°C.
Where Armstrong’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Gimli, the nearest location with a full year of temperatures.
- Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Armstrong’s climate
How warm does Armstrong get in summer?
On a normal day in July the thermometer climbs to 25.3°C, the warmest of the year.
How cold does Armstrong get in winter?
At its coldest, in January, the normal low is −22.7°C.
How much rain and snow does Armstrong get?
The year adds up to 517 mm. June is the peak month (87 mm) and February the low one (12 mm).
Are these figures for Armstrong itself?
Not exactly. Armstrong lacks a normals station, so Gimli supplies the figures.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Armstrong →
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).