Currently: 28 °F. Overcast. (Weather station: London Weather Station, Canada). See more current weatherSt. Thomas Extended Forecast with high and low temperatures
2 Week Extended Forecast in St. Thomas, Ontario, Canada
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Sun Dec 7 |  | 31 / 18 °F | Light snow. Cloudy. | 19 °F | 12 mph | ↑ | 79% | 66% | 0.85" | 0 (Low) | 7:41 am | 4:50 pm |
| Mon Dec 8 |  | 22 / 10 °F | Overcast. | 15 °F | 5 mph | ↑ | 48% | 6% | 0.00" | 0 (Low) | 7:42 am | 4:50 pm |
| Tue Dec 9 |  | 35 / 21 °F | Snow. Overcast. | 19 °F | 22 mph | ↑ | 85% | 68% | 2.47" | 0 (Low) | 7:43 am | 4:50 pm |
| Wed Dec 10 |  | 40 / 27 °F | Rain. Overcast. | 29 °F | 19 mph | ↑ | 82% | 78% | 0.76" | 0 (Low) | 7:44 am | 4:50 pm |
| Thu Dec 11 | | 29 / 19 °F | Light snow late. Overcast. | 20 °F | 8 mph | ↑ | 73% | 38% | 0.33" | 0 (Low) | 7:45 am | 4:50 pm |
| Fri Dec 12 | | 29 / 18 °F | Cloudy. | 15 °F | 11 mph | ↑ | 68% | 3% | 0.00" | 0 (Low) | 7:46 am | 4:50 pm |
| Sat Dec 13 | | 24 / 15 °F | Overcast. | 14 °F | 9 mph | ↑ | 75% | 2% | 0.00" | 0 (Low) | 7:46 am | 4:51 pm |
| Sun Dec 14 |  | 25 / 21 °F | Mostly sunny. | 17 °F | 5 mph | ↑ | 62% | 51% | 0.06" | 0 (Low) | 7:47 am | 4:51 pm |
| Mon Dec 15 | | 25 / 19 °F | Moderate snow. Cloudy. | 19 °F | 7 mph | ↑ | 91% | 70% | 5.13" | 0 (Low) | 7:48 am | 4:51 pm |
| Tue Dec 16 | | 26 / 19 °F | Light snow. Cloudy. | 12 °F | 20 mph | ↑ | 74% | 42% | 0.15" | 0 (Low) | 7:49 am | 4:51 pm |
| Wed Dec 17 | | 29 / 19 °F | Light snow late. Mostly cloudy. | 28 °F | 3 mph | ↑ | 86% | 45% | 0.28" | 0 (Low) | 7:49 am | 4:52 pm |
| Thu Dec 18 |  | 29 / 21 °F | Snow changing to rain. Overcast. | 17 °F | 16 mph | ↑ | 88% | 65% | 0.76" | 0 (Low) | 7:50 am | 4:52 pm |
| Fri Dec 19 |  | 40 / 23 °F | Heavy rain. Overcast. | 37 °F | 8 mph | ↑ | 99% | 96% | 2.82" | 0 (Low) | 7:51 am | 4:52 pm |
| Sat Dec 20 | | 38 / 25 °F | Light snow. Cloudy. | 26 °F | 16 mph | ↑ | 61% | 47% | 0.45" | 0 (Low) | 7:51 am | 4:53 pm |
| Sun Dec 21 |  | 38 / 18 °F | Breaks of sun late. | 31 °F | 6 mph | ↑ | 62% | 42% | 0.04" | 0 (Low) | 7:52 am | 4:53 pm |
| * Updated Saturday, December 6, 2025 4:23:59 pm St. Thomas time - Weather by CustomWeather, © 2025 | ||||||||||||