San Juan County (Silverton)
May
Weather in San Juan County, Colorado for May 2026
Your guide to San Juan County weather in May - trends and predictions
San Juan County typically experiences moderate snowfall in May, with an average of 7 snowy days.
In general, the average temperature in San Juan County at the beginning of May is 1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 11.6 °F by the end of May.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
19
Dry days
5
Rainy days
7
Snow days
5°/-4°
Temperatures
15 km/h
Avg max wind
56 %
Avg humidity
San Juan County Weather May
Move between months or click on a day
Temperatures trend during May in San Juan County
See the weather trend as well as the moving average line
May weather in San Juan County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| May 1 |  Moderate or heavy snow showers | 0° /-10° | 4 mm | 2.4 cm | |
| May 2 |  Overcast | 3° /-8° | 0 mm | 0 cm | |
| May 3 |  Patchy rain possible | 4° /-7° | 0.3 mm | 0 cm | |
| May 4 |  Moderate snow | 2° /-6° | 5.3 mm | 3 cm | |
| May 5 |  Patchy moderate snow | 0° /-8° | 6 mm | 2.9 cm | |
| May 6 | Moderate snow | -2° /-10° | 8.2 mm | 5.5 cm | |
| May 7 |  Light freezing rain | 0° /-11° | 0.9 mm | 0 cm | |
| May 8 | Light freezing rain | 2° /-7° | 0.2 mm | 0 cm | |
| May 9 |  Heavy rain at times | 5° /-4° | 2.3 mm | 0 cm | |
| May 10 | Patchy rain possible | 5° /-4° | 1.1 mm | 0 cm | |
| May 11 |  Cloudy | 6° /-4° | 0 mm | 0 cm | |
| May 12 |  Sunny | 7° /-2° | 0 mm | 0 cm | |
| May 13 | Sunny | 5° /-3° | 0 mm | 0 cm | |
| May 14 | Patchy moderate snow | -2° /-10° | 2.5 mm | 1 cm | |
| May 15 | Light freezing rain | 0° /-12° | 0.8 mm | 0 cm | |
| May 16 |  Partly cloudy | 3° /-9° | 0 mm | 0 cm | |
| May 17 | Overcast | 4° /-5° | 0 mm | 0 cm | |
| May 18 | Patchy moderate snow | 0° /-4° | 5.6 mm | 1.7 cm | |
| May 19 | Patchy moderate snow | -3° /-7° | 9.6 mm | 5.1 cm | |
| May 20 | Sunny | 2° /-11° | 0 mm | 0 cm | |
| May 21 | Sunny | 6° /-7° | 0 mm | 0 cm | |
| May 22 | Sunny | 9° /-4° | 0 mm | 0 cm | |
| May 23 | Sunny | 8° /0° | 0 mm | 0 cm | |
| May 24 | Partly cloudy | 10° /0° | 0 mm | 0 cm | |
| May 25 | Sunny | 12° /4° | 0 mm | 0 cm | |
| May 26 | Partly cloudy | 8° /3° | 0 mm | 0 cm | |
| May 27 |  Thundery outbreaks possible | 11° /2° | 0 mm | 0 cm | |
| May 28 | Thundery outbreaks possible | 11° /5° | 0 mm | 0 cm | |
| May 29 | Partly cloudy | 12° /6° | 0 mm | 0 cm | |
| May 30 | Sunny | 14° /7° | 0 mm | 0 cm | |
| May 31 | Cloudy | 13° /5° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for San Juan County in May 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 San Juan County forecast closer to your planned date for the most up-to-date weather information.
Change Month
San Juan County in May - FAQ
What are the expected maximum and minimum temperatures in San Juan County during May?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in San Juan County during May?
In May, San Juan County can expect light to moderate rainfall, totaling 46.8 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in San Juan County in May 2026?
San Juan County experiences an average snowfall of 21.5 cm during May, occurring over 7 days.
What are the typical wind conditions in San Juan County during May?
The average wind speed in San Juan County during May is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
San Juan County snow forecast May 2026
Track daily snowfall levels and discover San Juan County’s snowy potential this May ❄️
May rainfall patterns in San Juan County
Explore the daily rainfall trends and prepare for San Juan Countys May weather 💧
Top locations in San Juan County
Select a location for an accurate weather forecast
More Locations Quick links
More San Juan County weather pages
You are here
Where is San Juan County?Get accurate weather forecasts for San Juan County, located at latitude 37.812 and longitude -107.665. Stay updated with localized weather information tailored for San Juan County.
Found a mistake?
We appreciate your attention to details. Tell us here.