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Northumberland County
Northumberland County
Ontario, Canada

Castleton

Castleton 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.

Now9°C
Best timeMay–Jun · Sep
Population–
Local time19:18
44.09° N, 77.94° WElevation 190 mUTC−4 · Eastern Daylight Time
The year in Castletonweather score
JanFebMarAprMayJunJulAugSepOctNovDec49October
October: high / low14° / 5°
Rain this month90mm
Best timeMay–Jun · Sep

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

Castleton 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-11°C

Average low in January

Wettest monthDecember

89 mm of rain

Driest monthMarch

70 mm of rain

Monuments nearby6+

within 33 km

Weather in Castleton

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

14-day forecast
9°C

Clear · wind 15 km/h · humidity 74%

Today hour by hour
Today22 Oct18°3°
Fri23 Oct11°0°
Sat24 Oct12°-1°
Sun25 Oct15°3°
Mon26 Oct15°3°
Tue27 Oct8°-2°
Wed28 Oct10°0°
Thu29 Oct17°4°
Fri30 Oct13°4°1.5 mm
Sat31 Oct10°0°

When to go to Castleton

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

Climate month by month
JanFebMarAprMayJunJulAugSepOctNovDec
Score253230437573606879492619
High-2°-1°5°13°21°26°28°26°22°14°8°2°
Low-11°-10°-5°1°8°14°16°15°11°5°0°-6°
Rain (mm)78727088958886871029010189
Wet days119101091012128121013

What's on in Castleton

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

Monuments and museums in Castleton

All monuments

Nature around Castleton

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 Castleton

Eclipses and meteor showers

Earthquakes around Castleton

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

Earthquakes

Towns and villages around Castleton

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

Places near Castleton

Frequently asked questions

When is the best time to visit Castleton?
Based on 30-year climate normals, May, June and September offer the best balance of comfortable temperatures, low rainfall and sunshine in Castleton.
What is the hottest month in Castleton?
July is the warmest month, with average highs of 28°C and lows of 16°C.
What is the coldest month in Castleton?
January is the coldest month, with average highs of -2°C and lows of -11°C.
What is the rainiest month in Castleton?
December is the wettest month with about 89 mm of precipitation on 13 wet days.