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Weather in St. Thomas for December 2025

Your guide to St. Thomas weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Weather Warning - See hour by hour.

    • Snow Forecast ❄️

  • The climate of St. Thomas in December is quite snowy, averaging 14 snowy days.
    According to St. Thomas snow forecast for December 2025, 5 snowy days are expected in the next 2 weeks. The closest date with snow is Saturday, 13 December.

    • Temperatures

  • Until now, December 2025 in St. Thomas is cooler than usual, with temperatures averaging -1.1 °C, this is -2.6 °C below the typical seasonal average.

  • The forecast for the next days in St. Thomas predicts temperatures to be around 0 °C, close to the historical average.

  • In general, the average temperature in St. Thomas at the beginning of December is 1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 4.3 °C by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
8
Dry days
Average rainy days
9
Rainy days
Average snowy days
14
Snow days
Average temperatures
3°/-1°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
85 %
Avg humidity

St. Thomas Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate rain
1°
2
Light rain
2°
3
Moderate snow
1°
4
Overcast
1°
5
Freezing fog
-0°
6
Patchy rain possible
-0°
7
Heavy snow
2°
8
Mist
1°
9
Light drizzle
5°
10
Moderate rain
4°
11
Moderate or heavy snow showers
-0°
12
Overcast
0°
13
Weather Alert Light freezing rain
-4°
14
Weather Alert Moderate or heavy snow showers
-5°
15
Moderate or heavy snow showers
-5°
16
Freezing fog
-2°
17
Light freezing rain
2°
18
Patchy rain possible
4°
19
Light freezing rain
2°
20
Partly cloudy
-0°
21
Overcast
2°
22
Overcast
2°
23
Moderate rain
1°
24
Patchy rain possible
2°
25
Moderate or heavy snow showers
1°
26
Patchy rain possible
6°
27
Light rain shower
5°
28
Patchy rain possible
5°
29
Light drizzle
7°
30
Partly cloudy
4°
31
Light snow
2°

Temperatures trend during December in St. Thomas

See the weather trend as well as the moving average line

December weather in St. Thomas day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Moderate rain
Moderate rain
 1° /-3° 3.6 mm 0 cm
2 Dec. Light rain
Light rain
 2° /-1° 4.1 mm 2.2 cm
3 Dec. Moderate snow
Moderate snow
 1° /-2° 11 mm 4.2 cm
4 Dec. Overcast
Overcast
 1° /-3° 8.5 mm 1 cm
5 Dec. Freezing fog
Freezing fog
 0° /-5° 6.6 mm 0.5 cm
6 Dec. Patchy rain possible
Patchy rain possible
 0° /-3° 4 mm 2.9 cm
7 Dec. Heavy snow
Heavy snow
 2° /-3° 7.4 mm 5.4 cm
8 Dec. Mist
Mist
 1° /-4° 0 mm 0 cm
9 Dec. Light drizzle
Light drizzle
 5° /-2° 21.5 mm 2.2 cm
10 Dec. Moderate rain
Moderate rain
 4° /-1° 15.3 mm 5.1 cm
11 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-3° 1.6 mm 0.8 cm
12 Dec. Overcast
Overcast
 0° /-5° 0 mm 0 cm
13 Dec. Light freezing rain
Light freezing rain
 -4° /-13° 0.6 mm 0.3 cm
14 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -5° /-10° 8.5 mm 6.2 cm
15 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -5° /-13° 3.6 mm 2.6 cm
16 Dec. Freezing fog
Freezing fog
 -2° /-15° 0.1 mm 0 cm
17 Dec. Light freezing rain
Light freezing rain
 2° /-1° 0.1 mm 0 cm
18 Dec. Patchy rain possible
Patchy rain possible
 4° /-1° 0.2 mm 0 cm
19 Dec. Light freezing rain
Light freezing rain
 2° /-2° 0.3 mm 0 cm
20 Dec. Partly cloudy
Partly cloudy
 0° /-2° 0.1 mm 0 cm
21 Dec. Overcast
Overcast
 2° /-1° 0 mm 0 cm
22 Dec. Overcast
Overcast
 2° /-2° 0 mm 0 cm
23 Dec. Moderate rain
Moderate rain
 1° /1° 10.6 mm 0 cm
24 Dec. Patchy rain possible
Patchy rain possible
 2° /-2° 0.2 mm 0 cm
25 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-3° 5.6 mm 0 cm
26 Dec. Patchy rain possible
Patchy rain possible
 6° /-1° 2.5 mm 0 cm
27 Dec. Light rain shower
Light rain shower
 5° /3° 5.4 mm 0 cm
28 Dec. Patchy rain possible
Patchy rain possible
 5° /2° 1.9 mm 0 cm
29 Dec. Light drizzle
Light drizzle
 7° /3° 31 mm 0 cm
30 Dec. Partly cloudy
Partly cloudy
 4° /0° 4.4 mm 1.1 cm
31 Dec. Light snow
Light snow
 2° /0° 2.7 mm 2 cm
Next
Important Notice
Our weather forecast for St. Thomas in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the St. Thomas forecast closer to your planned date for the most up-to-date weather information.
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St. Thomas in December - FAQ

What are the expected maximum and minimum temperatures in St. Thomas during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in St. Thomas during December?
Significant rainfall exceeding 172.3 mm is expected in St. Thomas during December, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Will it snow in St. Thomas in December 2025?
St. Thomas experiences an average snowfall of 36.935 cm during December, occurring over 14 days.
What are the typical wind conditions in St. Thomas during December?
The average wind speed in St. Thomas during December is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

St. Thomas snow forecast December 2025

Track daily snowfall levels and discover St. Thomas’s snowy potential this December ❄️
On average, St. Thomas sees 14 snowy days during December, with approximately 36.9 cm of total snowfall.

December rainfall patterns in St. Thomas

Explore the daily rainfall trends and prepare for St. Thomass December weather 💧
Typically, St. Thomas has 9 rainy days in December with a total of 172.3 mm of rainfall.

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Location coordinates Where is St. Thomas?

Get accurate weather forecasts for St. Thomas, located at latitude 42.774 and longitude -81.18. Stay updated with localized weather information tailored for St. Thomas.

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