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Regional Municipality of Niagara
Regional Municipality of Niagara
Ontario, Canada

Grantham

Grantham is a locality in Ontario, Canada. The climate is classified as hot-summer humid continental (Köppen Dfa), with warm summers, cold winters and precipitation in every season.

Now14°C
Best timeMay–Jun · Sep
Population–
Local time12:48
43.21° N, 79.23° WElevation 90 mUTC−4 · Eastern Daylight Time
The year in Granthamweather score
JanFebMarAprMayJunJulAugSepOctNovDec53October
October: high / low16° / 7°
Rain this month78mm
Best timeMay–Jun · Sep

Best: May–Jun · Sep. Warmth, sunshine and dry days, month by month.

Grantham at a glance

Best time to visitMay–Jun · Sep

The months with the highest weather score

Warmest month28°C

Average high in July

Coolest month-7°C

Average low in January

Wettest monthOctober

78 mm of rain

Driest monthFebruary

59 mm of rain

Monuments nearby8+

within 11 km

Weather in Grantham

Now and the next ten days. The 14 and 30-day outlooks are one click away.

14-day forecast
14°C

Sunny · wind 5 km/h · humidity 69%

Today hour by hour
Today22 Oct18°7°
Fri23 Oct14°6°
Sat24 Oct15°4°
Sun25 Oct18°7°
Mon26 Oct17°8°
Tue27 Oct13°5°
Wed28 Oct14°3°
Thu29 Oct19°10°3.9 mm
Fri30 Oct11°4°0.5 mm
Sat31 Oct12°3°

When to go to Grantham

Each month's weather score (warmth, sun, dry days) with its temperatures and rain.

Climate month by month
JanFebMarAprMayJunJulAugSepOctNovDec
Score152223346465545869531715
High1°1°6°13°20°25°28°27°23°16°9°4°
Low-7°-7°-3°2°9°15°18°17°13°7°1°-3°
Rain (mm)665964808184847889788476
Wet days151213151416161413171416

What's on in Grantham

Concerts, football matches, the public holidays ahead and the town's festivals through the year.

Monuments and museums in Grantham

All monuments

Nature around Grantham

Nature in Canada

Wildlife in October

The birds and mammals of Canada seen most this month, compared with the rest of their year.

The sky over Grantham

Eclipses and meteor showers

Earthquakes around Grantham

The last 30 days within 300 km, and the record since 1950.

Earthquakes

Towns and villages around Grantham

Each with its own page: weather, climate and the best time to visit.

Places near Grantham

Frequently asked questions

When is the best time to visit Grantham?
Based on 30-year climate normals, May, June and September offer the best balance of comfortable temperatures, low rainfall and sunshine in Grantham.
What is the hottest month in Grantham?
July is the warmest month, with average highs of 28°C and lows of 18°C.
What is the coldest month in Grantham?
January is the coldest month, with average highs of 1°C and lows of -7°C.
What is the rainiest month in Grantham?
October is the wettest month with about 78 mm of precipitation on 17 wet days.