Weather TomorrowWeather Tomorrow in Portland, ME
Sunday, April 5, 2026
Rain
Precip chance
99%
Wind
5-10 mph
Humidity
89%
Feels like
47–39°F
Rain forecast
Rain likely starts around 6 AM and may continue until 12 AM. Peak chance: 99% around 3 PM.
Data source: National Weather Service (NOAA) · Updated just now
Tomorrow by Hour
37°Temperature trend49°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 4 AM☽ | 38°F | Cloudy | 6% | 10 mph SE | ||
| 5 AM☽ | 38°F | Slight Chance Rain Showers | 22% | 10 mph SE | ||
| 6 AM☽ | 38°F | Chance Rain Showers | 43% | 10 mph SE | ||
| 7 AM☽ | 37°F | Chance Rain Showers | 52% | 10 mph SE | ||
| 8 AM☽ | 38°F | Chance Rain Showers | 36% | 10 mph SE | ||
| 9 AM☽ | 38°F | Rain Showers | 75% | 10 mph SE | ||
| 10 AM | 39°F | Rain Showers Likely | 66% | 10 mph SE | ||
| 11 AM | 39°F | Rain Showers | 88% | 10 mph SE | ||
| 12 PM | 40°F | Rain Showers | 91% | 10 mph SE | ||
| 1 PM | 41°F | Rain Showers | 94% | 5 mph S | ||
| 2 PM | 41°F | Rain Showers | 96% | 5 mph S | ||
| 3 PM | 42°F | Rain Showers | 99% | 5 mph SW | ||
| 4 PM | 43°F | Rain Showers | 98% | 5 mph SW | ||
| 5 PM | 45°F | Rain Showers | 96% | 5 mph SW | ||
| 6 PM | 47°F | Rain Showers | 95% | 5 mph SW | ||
| 7 PM | 48°F | Rain Showers | 93% | 5 mph SW | ||
| 8 PM | 48°F | Rain Showers | 92% | 5 mph SW | ||
| 9 PM | 48°F | Rain Showers | 90% | 5 mph SW | ||
| 10 PM☽ | 49°F | Rain Showers | 77% | 5 mph SW | ||
| 11 PM☽ | 49°F | Rain Showers Likely | 63% | 10 mph SW | ||
| 12 AM☽ | 49°F | Chance Rain Showers | 50% | 10 mph W | ||
| 1 AM☽ | 48°F | Chance Rain Showers | 36% | 10 mph W | ||
| 2 AM☽ | 46°F | Slight Chance Rain Showers | 23% | 10 mph W | ||
| 3 AM☽ | 44°F | Mostly Cloudy | 9% | 10 mph W | ||
Precipitation Timeline
100%
50%
99%
4a10a4p10p
<20%20-50%50-70%>70%
What to Wear Tomorrow
Cool weather — layer up
Clothing
- • Long-sleeve shirt
- • Light jacket or vest
Footwear
Water-resistant shoes
Accessories
- • Umbrella
- • Rain jacket
Conditions
High: 49°F
Low: 37°F
Wind: 5-10 mph
Rain: 99%
Rain expected around 6 AM — carry an umbrella.
Best Time to Be Outside Tomorrow
8 PM – 9 PM
Decent window — dress appropriately (light wind, daylight)
4a10a4p10p
More for Portland, ME
Forecast by ZIP in Portland
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Frequently Asked Questions
What is the weather forecast for tomorrow in Portland, ME?
Tomorrow in Portland: High of 49°F, Low of 37°F. Rain with 99% chance of precipitation. Wind 5-10 mph.
Will it rain tomorrow in Portland?
Rain likely starts around 6 AM and may continue until 12 AM. Peak chance: 99% around 3 PM.
What should I wear tomorrow in Portland?
With a high of 49°F and low of 37°F, check our "What to Wear" section above for specific clothing recommendations based on temperature, wind, and precipitation.
How accurate is this forecast?
Our forecasts come directly from the National Weather Service (NOAA), which provides some of the most accurate weather predictions available. Tomorrow forecasts are generally 80-90% accurate, with accuracy decreasing the further out you look. Data is refreshed every 30 minutes.