Chalk River, ON
Ontario
Chalk River is a small town in Ontario with a population of 1,025.
Population source: Wikidata (dated census and official estimates), GeoNames. Climate: WorldClim 2.1 normals (1970-2000), NASA POWER. Updated August 2026
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How Chalk River Compares to the U.S. Average (100% = U.S. avg)
People
Climate
Temperature
| Annual Average | 39.4°F |
| 27% below US avg | |
| January Average | 9°F (-13°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 522 ft (159 m) |
| Area | 19.4 sq mi (50.3 km²) |
| Population Density | 53/sq mi |
| Coordinates | 46.0168°N, 77.4495°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 15.0 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1908 | NOTRE DAME DE LA SALETTE | Meteorological | 15.0 m | 33 | 146 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 9°F (-13°C) | 2.2 in | Coldest |
| February | 12°F (-11°C) | 1.9 in | Driest |
| March | 23°F (-5°C) | 2.3 in | |
| April | 38°F (3°C) | 2.5 in | |
| May | 52°F (11°C) | 3.3 in | |
| June | 61°F (16°C) | 3.4 in | |
| July | 66°F (19°C) | 3.4 in | Warmest |
| August | 64°F (18°C) | 3.4 in | |
| September | 56°F (13°C) | 3.5 in | Wettest |
| October | 44°F (7°C) | 3.3 in | |
| November | 32°F (0°C) | 3.0 in | |
| December | 17°F (-8°C) | 2.5 in |
Chalk River has a seasonal temperature swing of 57°F / from 9°F in January to 66°F in July. Total annual precipitation is 34.6 inches, with September being the wettest month (3.5") and February the driest (1.9").
Schools in Chalk River
1 public schools (OpenStreetMap data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| St. Anthony's Catholic School | - | - | - | - |
Radio Stations near Chalk River
1 stations within ~55 km.
| Station | Genre | Quality | |
|---|---|---|---|
| CIMY-FM 104.9 "MyFM" Pembroke, ON | adult contemporary | AAC+ 31 kbps |
Museums in Chalk River
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Canadian Nuclear Heritage Museum | ||||
| CFB Petawawa Military Museum & Canadian Airborne Forces Museum | ||||
| Petawawa Heritage Village |
Libraries in Chalk River
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| Deep River Public Library | 0.0 | |||||
| Laurentian Hills Public Library - Chalk River Branch | 0.0 | |||||
| Laurentian Hills Public Library - Point Alexander Branch | 0.0 | |||||
| Petawawa Public Library | 0.0 |
Monuments in Chalk River
1 monuments within city radius - OpenStreetMap data
Gas Stations in Chalk River
2 gas stations within city radius - OpenStreetMap data
Ski Resorts Near Chalk River
1 ski resorts within range.
| Resort | Slopes (km) | Lifts | Peak (m) | Price | Season | Night | Park |
|---|---|---|---|---|---|---|---|
| Madawaska Mountain | 0.0 | - | - | $0 | - | - | - |
Airports Near Chalk River
8 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Pembroke Airport | YTA | Medium Airport |
| Aérodrome Nilgaut | - | Small Airport |
| Bonnechere Soaring Aerodrome | - | Small Airport |
| Bonnie Brae Airfield | - | Small Airport |
| Bruce McPhail Memorial Airport | - | Small Airport |
| Collins Field | - | Small Airport |
| Madawaska Valley Airpark | - | Small Airport |
| Rolph Airport | - | Small Airport |
Post Offices in Chalk River
1 post offices.
| Post Office | Address |
|---|---|
| Chalk River Post Office |
Churches & Religious Organizations in Chalk River
2 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| Kingdom Hall of Jehovah's Witnesses | |
| St. Anthony's Roman Catholic Church |
Explore Near Chalk River
UFO Sightings Near Chalk River
1 UFO sighting reports from the National UFO Reporting Center (NUFORC) found near Chalk River.
| Name | Year | Description |
|---|---|---|
| Rolphton (canada), ON | 1997 | 1997 march 17th seen green light.. flash going towards ottawa.. three old ladies seen the same thing.. I went to bed and felt imprinted |
Waterfalls Near Chalk River
1 waterfalls from OpenStreetMap and USGS geographic data found near Chalk River.
| Name | Description |
|---|---|
| High Falls |
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Get ReportFrequently Asked Questions About Chalk River
What is the population of Chalk River?
Chalk River has a population of 1,025 residents and is located in Ontario. The population density is 53 people per square mile, spread across 19.4 square miles.
What is the weather like in Chalk River?
Chalk River has a cool climate with an average annual temperature of 39°F (4°C). Winter temperatures average 9°F in January, while summers reach an average of 66°F in July. Annual rainfall totals 34.6 inches, with 11.9 inches of snow.
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