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Postagoni Lake

49.3966° N, 88.0457° W

Postagoni Lake, Ontario. 49.3966° N, 88.0457° W

Not for navigation. Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/postagoni-lake/, compiled October 9, 2026

  • Canadian Geographical Names Database, Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada.
  • HydroLAKES v1.0, Messager et al. 2016 / WWF HydroSHEDS. Licensed under CC BY 4.0.
  • Census boundaries and population, 2021, Statistics Canada. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada.
  • Fishing access points, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • Fisheries Management Zones, Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario.
  • City page weather forecasts and alerts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).

Postagoni Lake covers 4.76 km², Ontario. It lies 7.3 km southeast of Macdiarmid.

Area
4.76 km²
Shoreline
18 km
Elevation
378 m

Today on the water

2.7 °C

Wind W 6 km/h

Observed at Greenstone (Beardmore), as of 5:00 a.m. EDT

Time6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.
Wind km/hW 10var. 5var. 5S 10SE 10SE 20SE 20SE 30
Gusts km/h4050
Temp. °C33811121088
Precip. %0000020200

Tonight: Cloudy. 40 percent chance of showers early this evening. Clearing near midnight. Wind west 30 km/h gusting to 50 becoming north 20 then light this evening. Low plus 2.

Weather: Greenstone (Beardmore) (local forecast), as of 5:03 a.m. EDT

Sun and moon

Civil dawn
7:32 a.m.
Sunrise
8:04 a.m.
Sunset
7:13 p.m.
Civil dusk
7:45 p.m.
Moonrise
6:56 a.m.
Moonset
6:32 p.m.
Moon
Waning crescent, 1% lit

Getting on the water

1 listed boat launch. marks launches on the map.