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San Juan County (Silverton)
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United States weather

Weather in San Juan County, Colorado for May 2026

Your guide to San Juan County weather in May - trends and predictions

    Snow Forecast ❄️

  • San Juan County typically experiences moderate snowfall in May, with an average of 7 snowy days.
    According to San Juan County snow forecast for May 2026, 3 snowy days are expected in the next 2 weeks. The closest date with snow is Wednesday, May 13.

    • Temperatures

  • Until now, May 2026 in San Juan County has been nearly identical to the historical average, with a temperature of 2.8 °F (showing only a slight deviation of 0.5 °F).

  • The forecast for the coming days of May 2026 predicts a temperature of 11.9 °F , which is warmer than usual.

  • In general, the average temperature in San Juan County at the beginning of May is 1.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 11.6 °F by the end of May.

    • More

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Average dry days
19
Dry days
Average rainy days
5
Rainy days
Average snowy days
7
Snow days
Average temperatures
5°/-4°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
56 %
Avg humidity

San Juan County Weather May

Move between months or click on a day
April
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate or heavy snow showers
1°
2
Overcast
4°
3
Patchy rain possible
5°
4
Moderate snow
3°
5
Patchy moderate snow
1°
6
Moderate snow
-3°
7
Light freezing rain
2°
8
Light freezing rain
5°
9
Heavy rain at times
7°
10
Sunny
11°
11
Sunny
14°
12
Sunny
16°
13
Patchy rain possible
15°
14
Patchy rain possible
12°
15
Sunny
10°
16
Sunny
12°
17
Sunny
15°
18
Sunny
14°
19
Sunny
14°
20
Patchy rain possible
8°
21
Sunny
11°
22
Sunny
11°
23
Moderate or heavy snow showers
4°
24
Partly cloudy
10°
25
Sunny
12°
26
Partly cloudy
8°
27
Thundery outbreaks possible
11°
28
Thundery outbreaks possible
11°
29
Partly cloudy
12°
30
Sunny
14°
31
Cloudy
13°

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
April June
Date Weather Temperatures Rain Snow More
May 1 Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-9° 3.5 mm 1.9 cm
May 2 Overcast
Overcast
 4° /-9° 0.3 mm 0 cm
May 3 Patchy rain possible
Patchy rain possible
 5° /-6° 0.3 mm 0 cm
May 4 Moderate snow
Moderate snow
 3° /-5° 6.7 mm 4.1 cm
May 5 Patchy moderate snow
Patchy moderate snow
 1° /-6° 3.2 mm 1.4 cm
May 6 Moderate snow
Moderate snow
 -3° /-10° 8.4 mm 5.3 cm
May 7 Light freezing rain
Light freezing rain
 2° /-10° 0.4 mm 0 cm
May 8 Light freezing rain
Light freezing rain
 5° /-5° 0.8 mm 0 cm
May 9 Heavy rain at times
Heavy rain at times
 7° /-2° 1.9 mm 0 cm
May 10 Sunny
Sunny
 11° /1° 0 mm 0 cm
May 11 Sunny
Sunny
 14° /3° 0 mm 0 cm
May 12 Sunny
Sunny
 16° /7° 0 mm 0 cm
May 13 Patchy rain possible
Patchy rain possible
 15° /3° 1.8 mm 1.2 cm
May 14 Patchy rain possible
Patchy rain possible
 12° /0° 3.9 mm 2.7 cm
May 15 Sunny
Sunny
 10° /3° 0 mm 0 cm
May 16 Sunny
Sunny
 12° /2° 0 mm 0 cm
May 17 Sunny
Sunny
 15° /4° 0 mm 0 cm
May 18 Sunny
Sunny
 14° /7° 0 mm 0 cm
May 19 Sunny
Sunny
 14° /6° 0 mm 0 cm
May 20 Patchy rain possible
Patchy rain possible
 8° /2° 0.5 mm 0 cm
May 21 Sunny
Sunny
 11° /3° 0 mm 0 cm
May 22 Sunny
Sunny
 11° /3° 0 mm 0 cm
May 23 Moderate or heavy snow showers
Moderate or heavy snow showers
 4° /-6° 2.2 mm 1.6 cm
May 24 Partly cloudy
Partly cloudy
 10° /0° 0 mm 0 cm
May 25 Sunny
Sunny
 12° /4° 0 mm 0 cm
May 26 Partly cloudy
Partly cloudy
 8° /3° 0 mm 0 cm
May 27 Thundery outbreaks possible
Thundery outbreaks possible
 11° /2° 0 mm 0 cm
May 28 Thundery outbreaks possible
Thundery outbreaks possible
 11° /5° 0 mm 0 cm
May 29 Partly cloudy
Partly cloudy
 12° /6° 0 mm 0 cm
May 30 Sunny
Sunny
 14° /7° 0 mm 0 cm
May 31 Cloudy
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.
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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 ❄️
On average, San Juan County sees 7 snowy days during May, with approximately 21.5 cm of total snowfall.

May rainfall patterns in San Juan County

Explore the daily rainfall trends and prepare for San Juan Countys May weather 💧
Typically, San Juan County has 5 rainy days in May with a total of 46.8 mm of rainfall.
Top locations in San Juan County
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Oljato-Monument ValleySilverton
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Location coordinates 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.

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