The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
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Waterloo Weather in May

Waterloo in May

The short of it: Waterloo in May averages a high of 17 °C (63 °F) and a low of 6 °C (43 °F), with 115 mm (4.5 in) of rain and about 14 h 52 min of daylight. Rated 3 of 5 for a visit; the best months are June and August. Source: TerraClimate climate normals, 1991–2020.

Average high 17° · low 6° · rain 115 mm · daylight 14 h 52 min

✦✦✦ Fair for a visit · best months: June & August

Thirty years of records give Waterloo an average May high of 17°, a low of 6° and some 115 mm of rain. Spring takes hold here: highs climb 8° from April to about 17°, with nights near 6°. Wet spells are common — about 115 mm, the 5th wettest month. The snow cover usually melts away this month.

The sun is up for about 14 h 52 min in mid-May, 85 minutes more than a month before.

For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates May 3 of 5 for a visit; the finest months here are June and August.

Against its neighbours, Waterloo runs cooler than most and wetter than most in May. Bromont, 11 km to the WSW, is 1° warmer by day.

May in Waterloo, by the numbers

Warmth rank
5th warmest of 12
Rain rank
5th wettest of 12
Versus April
8° warmer, 13 mm more rain
Versus June
5° colder
Day–night spread
11°
Snow season
Nov–Apr
Daylight, mid-month
14 h 52 min
Average wind
10 km/h

Neighbouring Towns

May averages · distance by the crow’s flight
TownDistanceHighLowRain
BromontQuebec11 km WSW18°7°111 mm
Lac-BromeQuebec15 km S18°6°117 mm
GranbyQuebec18 km WNW18°7°105 mm
Roxton PondQuebec19 km NW18°6°104 mm
CowansvilleQuebec25 km SW18°6°109 mm
SuttonQuebec29 km SSW18°6°116 mm
MagogQuebec30 km ESE18°6°106 mm
Acton ValeQuebec34 km N18°6°103 mm

The Almanac · Waterloo Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Fair
The Almanac Speaks
May
✦✦✦✦✦

Spring takes hold here: highs climb 8° from April to about 17°, with nights near 6°. Wet spells are common — about 115 mm, the 5th wettest month. The snow cover usually melts away this month.

Climate of Waterloo by month
MonthHighLowRainWindDaylightVisit
January-5°-15°99 mm10 km/h9 h 5 min✦
February-4°-14°78 mm10 km/h10 h 19 min✦
March2°-8°84 mm11 km/h11 h 47 min✦
April9°-1°102 mm11 km/h13 h 27 min✦
May17°6°115 mm10 km/h14 h 52 min✦✦✦
June22°11°126 mm8 km/h15 h 38 min✦✦✦
July25°14°122 mm8 km/h15 h 19 min✦✦✦
August24°13°122 mm7 km/h14 h 5 min✦✦✦
September20°9°91 mm8 km/h12 h 27 min✦✦✦
October12°3°133 mm10 km/h10 h 51 min✦✦
November5°-2°101 mm10 km/h9 h 26 min✦
December-1°-9°111 mm10 km/h8 h 44 min✦

Questions Readers Ask about Waterloo in May

Answered from the wire & the Almanac

What is the weather like in Waterloo in May?

Days average 17 °C (63 °F) and nights 6 °C (43 °F), with about 115 mm (4.5 in) of rain over the month. Spring takes hold here: highs climb 8° from April to about 17°, with nights near 6°. Wet spells are common — about 115 mm, the 5th wettest month. The snow cover usually melts away this month.

Is May a good time to visit Waterloo?

The Almanac gives May 3 of 5 (fair). The best months are June and August.

How long are the days in Waterloo in May?

In mid-May the sun is up for about 14 h 52 min. The days are lengthening — from 8 h 44 min in December to 15 h 38 min in June.

Does it snow in Waterloo in May?

Hardly — May nights average 6 °C (43 °F), above freezing.

What should I pack for Waterloo in May?

Layers, a warm coat and stout boots, plus a good raincoat — it is a wet month.

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The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor