Boston
May
Weather in Boston for May 2025
Your guide to Boston weather in May - trends and predictions
Until now, May 2025 in Boston is slightly cooler than the historical average by -1.6 °F.
The forecast for the upcoming days in Boston predicts a temperature of 17 °F, which is slightly above the historical average.
In general, the average temperature in Boston at the beginning of May is 14.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19.7 °F by the end of May.
Boston in May brings notable rainfall, with an average of 18 rainy days and a total precipitation of 85.4 mm.
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Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
19°/10°
Temperatures
17 km/h
Avg max wind
65 %
Avg humidity
Boston Weather May
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Temperatures trend during May in Boston
See the weather trend as well as the moving average line
May weather in Boston day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Cloudy | 15° /6° | 3.6 mm | 4 | |
| May 2 | Cloudy | 17° /8° | 4.8 mm | 4 | |
| May 3 |  Patchy rain possible | 14° /8° | 1 mm | 3 | |
| May 4 |  Heavy rain at times | 11° /7° | 10.4 mm | 3 | |
| May 5 |  Moderate or heavy rain shower | 13° /7° | 10.7 mm | 3 | |
| May 6 |  Sunny | 17° /8° | 11.8 mm | 5 | |
| May 7 |  Overcast | 17° /9° | 0.1 mm | 4 | |
| May 8 | Cloudy | 16° /8° | 1.4 mm | 4 | |
| May 9 | Patchy rain possible | 15° /7° | 2.3 mm | 4 | |
| May 10 | Sunny | 15° /7° | 4.1 mm | 4 | |
| May 11 | Patchy rain possible | 17° /8° | 0.3 mm | 4 | |
| May 12 | Patchy rain possible | 18° /8° | 0.3 mm | 4 | |
| May 13 | Cloudy | 19° /10° | 0.2 mm | 4 | |
| May 14 |  Partly cloudy | 22° /11° | 0.5 mm | 5 | |
| May 15 | Patchy rain possible | 21° /12° | 2.4 mm | 5 | |
| May 16 | Partly cloudy | 22° /14° | 0.5 mm | 5 | |
| May 17 | Patchy rain possible | 18° /11° | 5.4 mm | 4 | |
| May 18 | Cloudy | 20° /9° | 0 mm | 5 | |
| May 19 | Partly cloudy | 15° /7° | 0 mm | 1 | |
| May 20 | Overcast | 11° /6° | 0 mm | 0.8 | |
| May 21 | Patchy rain possible | 11° /8° | 1.9 mm | 0.7 | |
| May 22 |  Moderate rain | 9° /8° | 13.4 mm | 0 | |
| May 23 | Moderate rain | 8° /7° | 7.2 mm | 2 | |
| May 24 | Partly cloudy | 17° /6° | 0 mm | 4 | |
| May 25 | Partly cloudy | 21° /8° | 0 mm | 4 | |
| May 26 | Patchy rain possible | 17° /11° | 4.5 mm | 3 | |
| May 27 | Moderate rain | 10° /7° | 5.9 mm | 2 | |
| May 28 | Overcast | 19° /7° | 0.1 mm | 3 | |
| May 29 | Sunny | 23° /11° | 0 mm | 5 | |
| May 30 | Patchy rain possible | 26° /16° | 0.2 mm | 5 | |
| May 31 | Sunny | 22° /15° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Boston 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 Boston forecast closer to your planned date for the most up-to-date weather information.
Change Month
Boston in May - FAQ
What are the expected maximum and minimum temperatures in Boston during May?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Boston during May?
Moderate rainfall is anticipated in Boston during May, with a total of 85.4 mm spread over approximately 18 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Boston during May?
The average wind speed in Boston during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Boston
Explore the daily rainfall trends and prepare for Bostons May weather 💧
UV exposure in Boston during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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