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Thelma Lake

50.9793° N, 90.4807° W

Thelma Lake, Ontario. 50.9793° N, 90.4807° W

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 Depths are from government surveys and may be outdated.

borealbound.ca/lakes/on/thelma-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.
  • 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).

Thelma Lake covers 4.19 km², Ontario. It lies 29 km southwest of Rat Rapids.

Area
4.19 km²
Shoreline
27.2 km
Elevation
378 m

Today on the water

3.3 °C

CloudyWind W 11 km/h

Observed at Pickle Lake, as of 2:00 a.m. CDT

Wind from the west: the west shore is the sheltered side.

Time3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.
Wind km/hW 10SW 10SW 10S 20S 15S 15SE 15SE 30
Temp. °C103710975
Precip. %2020203030308080

Tonight: Cloudy with 60 percent chance of showers this evening. Clearing before morning. Fog patches developing overnight. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low zero.

Weather: Pickle Lake (local forecast), as of 2:02 a.m. CDT

Sun and moon

Civil dawn
6:42 a.m.
Sunrise
7:15 a.m.
Sunset
6:21 p.m.
Civil dusk
6:54 p.m.
Moonrise
6:07 a.m.
Moonset
5:40 p.m.
Moon
Waning crescent, 1% lit