Saint Louis County (Duluth)
May
Weather in Saint Louis County, Minnesota for May 2026
Your guide to Saint Louis County weather in May - trends and predictions
Dense Fog Advisory - See hour by hour.
Until now, May 2026 in Saint Louis County is slightly cooler than the historical average by -1.4 °F.
The forecast for the upcoming days in Saint Louis County predicts a temperature of 18.5 °F, which is slightly above the historical average.
In general, the average temperature in Saint Louis County at the beginning of May is 12.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17 °F by the end of May.
Saint Louis County experiences moderate rainfall in May, with an average of 8 rainy days and a total precipitation of 42.9 mm.
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Temperatures
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23
Dry days
8
Rainy days
0
Snow days
16°/6°
Temperatures
19 km/h
Avg max wind
70 %
Avg humidity
Saint Louis County Weather May
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Temperatures trend during May in Saint Louis County
See the weather trend as well as the moving average line
May weather in Saint Louis County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 9° /2° | 1.4 mm | 5 | |
| May 2 |  Moderate or heavy rain shower | 11° /1° | 10.1 mm | 5 | |
| May 3 |  Partly cloudy | 18° /4° | 0 mm | 7 | |
| May 4 | Partly cloudy | 13° /5° | 0 mm | 6 | |
| May 5 |  Overcast | 12° /1° | 0.1 mm | 6 | |
| May 6 | Partly cloudy | 17° /3° | 0 mm | 7 | |
| May 7 |  Sunny | 10° /1° | 0.2 mm | 4 | |
| May 8 |  Cloudy | 13° /0° | 0 mm | 5 | |
| May 9 | Cloudy | 19° /2° | 0.1 mm | 7 | |
| May 10 | Cloudy | 12° /3° | 0 mm | 5 | |
| May 11 | Sunny | 20° /1° | 0 mm | 8 | |
| May 12 | Sunny | 21° /9° | 1.3 mm | 4 | |
| May 13 | Sunny | 22° /10° | 0 mm | 7 | |
| May 14 | Cloudy | 19° /7° | 1.6 mm | 7 | |
| May 15 | Moderate or heavy rain shower | 20° /10° | 3.4 mm | 6 | |
| May 16 | Patchy rain possible | 17° /9° | 0.5 mm | 6 | |
| May 17 | Patchy rain possible | 9° /4° | 0.6 mm | 5 | |
| May 18 | Patchy rain possible | 9° /3° | 15.5 mm | 2 | |
| May 19 | Overcast | 8° /3° | 3.6 mm | 2 | |
| May 20 |  Heavy rain at times | 9° /2° | 3.2 mm | 5 | |
| May 21 | Patchy rain possible | 9° /4° | 2.9 mm | 2 | |
| May 22 | Partly cloudy | 14° /5° | 0.7 mm | 7 | |
| May 23 | Sunny | 12° /5° | 3.2 mm | 3 | |
| May 24 |  Fog | 23° /7° | 0.1 mm | 6.6 | |
| May 25 | Patchy rain possible | 21° /10° | 0.1 mm | 5.3 | |
| May 26 | Sunny | 26° /14° | 0 mm | 7.5 | |
| May 27 | Patchy rain possible | 15° /6° | 0.2 mm | 6.7 | |
| May 28 | Sunny | 22° /5° | 0 mm | 0.4 | |
| May 29 | Patchy rain possible | 10° /6° | 1.1 mm | 2 | |
| May 30 | Sunny | 11° /3° | 0 mm | 3 | |
| May 31 | Sunny | 14° /6° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Saint Louis 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 Saint Louis County forecast closer to your planned date for the most up-to-date weather information.
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Saint Louis County in May - FAQ
What are the expected maximum and minimum temperatures in Saint Louis County during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint Louis County during May?
In May, Saint Louis County can expect light to moderate rainfall, totaling 42.9 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Saint Louis County during May?
The average wind speed in Saint Louis County during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Saint Louis County
Explore the daily rainfall trends and prepare for Saint Louis Countys May weather 💧
Typically, Saint Louis County has 8 rainy days in May with a total of 42.9 mm of rainfall.
UV exposure in Saint Louis County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Saint Louis County?Get accurate weather forecasts for Saint Louis County, located at latitude 46.783 and longitude -92.107. Stay updated with localized weather information tailored for Saint Louis County.
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