Monthly climate averages for Grenfell, Canada. Based on 10-year ERA5 reanalysis data.
Dfb Warm-Summer Continental
Climate OverviewGrenfell, Canada in May has mild conditions, with highs averaging 18.7°C (66°F) and noticeably cooler mornings. Temperatures drop noticeably between day and night.
This month falls at the end of Spring.
Daily highs in May gradually rise from around 17°C (62°F) at the start to 21°C (70°F) by month's end.
Rainfall is heaviest during the last third of the month, while the first third tends to be drier.
The warmest days tend to fall around the 31th, averaging 21.9°C (71°F).
Compared to April, this month is about 9°C warmer with 3 more rainy days. Temperatures will rise further into June.
Daily averages based on historical data (2016–2025)
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -7°C / -16°C | -13°C / -22°C | 4days (16 mm) Good | 5h Fair | 80% Humid | 1.9 Low | Poor | View Details |
| February | -7°C / -17°C | -12°C / -23°C | 4days (13 mm) Good | 7.2h Good | 76% Humid | 3.2 Moderate | Poor | View Details |
| March | 1°C / -9°C | -4°C / -15°C | 5days (24 mm) Good | 8.4h Good | 73% Muggy | 4.9 Moderate | Poor | View Details |
| April | 9°C / -3°C | 5°C / -8°C | 6days (35 mm) Good | 10.2h Excellent | 62% Muggy | 5.4 High | Poor | View Details |
| May | 19°C / 6°C | 16°C / 2°C | 9days (60 mm) Wet | 11.6h Excellent | 58% Moderate | 5.9 High | Fair | View Details |
| June best | 23°C / 12°C | 21°C / 10°C | 11days (88 mm) Wet | 12.3h Excellent | 63% Muggy | 6.6 High | Excellent | View Details |
| July best | 26°C / 15°C | 26°C / 13°C | 9days (60 mm) Wet | 12.9h Excellent | 67% Muggy | 6.8 High | Excellent | View Details |
| August best | 25°C / 14°C | 24°C / 12°C | 8days (54 mm) Wet | 11.7h Excellent | 64% Muggy | 5.9 High | Excellent | View Details |
| September best | 21°C / 10°C | 18°C / 7°C | 7days (47 mm) Good | 9h Good | 62% Muggy | 4.7 Moderate | Excellent | View Details |
| October | 10°C / 2°C | 6°C / -3°C | 6days (37 mm) Good | 6.8h Fair | 68% Muggy | 2.9 Moderate | Poor | View Details |
| November | 1°C / -6°C | -4°C / -12°C | 6days (26 mm) Good | 5h Fair | 76% Humid | 1.9 Low | Poor | View Details |
| December | -6°C / -14°C | -11°C / -20°C | 6days (24 mm) Good | 4.4h Fair | 79% Humid | 1.5 Low | Poor | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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