Cumberland County (Portland)
May
Weather in Cumberland County, Maine for May 2027
Your guide to Cumberland County weather in May - trends and predictions
In general, the average temperature in Cumberland County at the beginning of May is 12.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 16.5 °C by the end of May.
The climate of Cumberland County in May is notably wet, with an average of 13 rainy days, and a total of 210.8 mm of precipitation.
Is May a good time to visit Cumberland County? check out the best time to travel to Cumberland County page.
✨ Is May a good time to visit Cumberland County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
18
Dry days
13
Rainy days
0
Snow days
14°/9°
Temperatures
19 km/h
Avg max wind
79 %
Avg humidity
Cumberland County Weather May
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Temperatures trend during May in Cumberland County
See the weather trend as well as the moving average line
May weather in Cumberland County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 11° /6° | 0.5 mm | 3 | |
| May 2 |  Light rain | 10° /7° | 3.3 mm | 3 | |
| May 3 | Patchy rain possible | 12° /6° | 1 mm | 3 | |
| May 4 |  Overcast | 13° /7° | 0.1 mm | 4 | |
| May 5 | Light rain | 13° /7° | 4.5 mm | 4 | |
| May 6 |  Heavy rain | 13° /8° | 33.6 mm | 3 | |
| May 7 | Light rain | 15° /8° | 7.3 mm | 4 | |
| May 8 | Light rain | 12° /7° | 3.1 mm | 5 | |
| May 9 | Light rain | 10° /6° | 8 mm | 4 | |
| May 10 |  Moderate rain | 12° /7° | 15.6 mm | 2 | |
| May 11 | Patchy rain possible | 13° /8° | 0 mm | 5 | |
| May 12 |  Partly cloudy | 12° /6° | 0.2 mm | 5 | |
| May 13 | Light rain | 12° /6° | 2.7 mm | 4 | |
| May 14 | Moderate rain | 14° /8° | 11.5 mm | 3 | |
| May 15 | Light rain | 14° /9° | 8.4 mm | 3 | |
| May 16 | Patchy rain possible | 17° /10° | 0.1 mm | 5 | |
| May 17 | Overcast | 17° /11° | 0.8 mm | 5 | |
| May 18 | Partly cloudy | 15° /10° | 0 mm | 6 | |
| May 19 | Patchy rain possible | 19° /9° | 0.3 mm | 5 | |
| May 20 | Partly cloudy | 18° /10° | 0.1 mm | 6 | |
| May 21 |  Mist | 15° /9° | 0 mm | 4 | |
| May 22 | Heavy rain | 17° /9° | 26.5 mm | 6 | |
| May 23 | Heavy rain | 15° /10° | 26.2 mm | 6 | |
| May 24 | Light rain | 15° /9° | 2.9 mm | 4 | |
| May 25 | Light rain | 16° /8° | 4.3 mm | 4 | |
| May 26 | Partly cloudy | 18° /10° | 0.3 mm | 6 | |
| May 27 | Light rain | 18° /12° | 6.2 mm | 6 | |
| May 28 | Patchy rain possible | 18° /12° | 2.2 mm | 5 | |
| May 29 | Moderate rain | 14° /10° | 13.7 mm | 3 | |
| May 30 | Patchy rain possible | 15° /8° | 2.2 mm | 4 | |
| May 31 | Heavy rain | 16° /9° | 25.3 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Cumberland 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 Cumberland County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cumberland County in May - FAQ
What are the expected maximum and minimum temperatures in Cumberland County during May?
During May, expect a variety of temperatures with highs around 14° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cumberland County during May?
Significant rainfall exceeding 210.8 mm is expected in Cumberland County during May, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cumberland County during May?
The average wind speed in Cumberland County during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Cumberland County
Explore the daily rainfall trends and prepare for Cumberland Countys May weather 💧
Typically, Cumberland County has 13 rainy days in May with a total of 210.8 mm of rainfall.
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