Belfast, ME Weather Forecast | 5 Day
Updated: Fri Sep 18th 2026 1:00 PM EDT
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Sunny
Fri 9-18-26
Sunny with a high of 74°F and a low of 52°F. Rainfall expected to have a 57% chance with an estimated 0.06in. Wind will be moderate, blowing around 16mph on average and gusts of 26.9mph at 11 PM. The humidity will be on the higher side, averaging about 68%, the maximum being 52% at 11 PM and 37% being its lowest at 2 PM. Barometric pressure is its highest of 30.1inHg at 11 PM, a lowest point of 29.93inHg at 2 PM with an avg 30.02inHg.
- HI: 74°F
- LO: 52°F
- Rainfall: 57% | est. 0.06in
- Snowfall: 0%
- Wind
15.2 mph - Humidity
68% avg. - UV Index
4.9 - Air QualityGood
- Sunrise
06:18 AM - Sunset
06:41 PM - Moonrise
02:50 PM - Moonset
10:55 PM - Moon Phase
First Quarter
Sunny
Weather Tomorrow, Sat 9-19-26
Sunny with a high of 63°F and a low of 42°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 12mph on average and gusts of 28.9mph at 2 AM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 76% at 7 AM and 34% being its lowest at 3 PM. Barometric pressure is its highest of 30.25inHg at 11 PM, a lowest point of 30.11inHg at 12 AM with an avg 30.18inHg.
- HI: 63°F
- LO: 42°F
- Rainfall: 3%
- Snowfall: 0%
- Wind
11.6 mph - Humidity
55% avg. - UV Index
5 - Air QualityGood
- Sunrise
06:19 AM - Sunset
06:39 PM - Moonrise
03:34 PM - Moonset
11:56 PM - Moon Phase
First Quarter
Overcast
Sun 9-20-26
Overcast with a high of 60°F and a low of 42°F. There might be light rainfall having a 20% chance with an estimated 0in. Wind will be moderate, blowing around 12mph on average and gusts of 19.7mph at 9 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 84% at 11 PM and 53% being its lowest at 12 PM. Barometric pressure is its highest of 30.25inHg at 12 AM, a lowest point of 30.09inHg at 11 PM with an avg 30.17inHg.
- HI: 60°F
- LO: 42°F
- Rainfall: 20% | est. 0in
- Snowfall: 0%
- Wind
11.6 mph - Humidity
70% avg. - UV Index
5 - Air QualityGood
- Sunrise
06:21 AM - Sunset
06:38 PM - Moonrise
04:09 PM - Moonset
Does not set today - Moon Phase
Waxing Gibbous
Overcast
Mon 9-21-26
Overcast with a high of 65°F and a low of 48°F. There's a moderate 42% chance of rainfall with an estimated 0.02in. Winds will be light at 9mph and gusts of 24.6mph at 11 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 97% at 7 AM and 38% being its lowest at 3 PM. Barometric pressure is its highest of 30.32inHg at 11 PM, a lowest point of 30.09inHg at 3 AM with an avg 30.16inHg.
- HI: 65°F
- LO: 48°F
- Rainfall: 42% | est. 0.02in
- Snowfall: 0%
- Wind
8.9 mph - Humidity
71% avg. - UV Index
4.9 - Air QualityGood
- Sunrise
06:22 AM - Sunset
06:36 PM - Moonrise
04:37 PM - Moonset
01:01 AM - Moon Phase
Waxing Gibbous
Overcast
Tue 9-22-26
Overcast with a high of 60°F and a low of 41°F. There might be light rainfall having a 12% chance. Winds will be light at 9mph and gusts of 20.8mph at 8 AM. The humidity will be on the higher side, averaging about 63%, the maximum being 82% at 10 PM and 37% being its lowest at 2 PM. Barometric pressure is its highest of 30.52inHg at 11 PM, a lowest point of 30.34inHg at 12 AM with an avg 30.42inHg.
- HI: 60°F
- LO: 41°F
- Rainfall: 12%
- Snowfall: 0%
- Wind
8.7 mph - Humidity
63% avg. - UV Index
5 - Air QualityGood
- Sunrise
06:23 AM - Sunset
06:34 PM - Moonrise
05:00 PM - Moonset
02:06 AM - Moon Phase
Waxing Gibbous
Cloudy
Wed 9-23-26
Cloudy with a high of 62°F and a low of 39°F. There might be light rainfall having a 11% chance. Winds will be light at 6mph and gusts of 7.7mph at 8 AM. The humidity will be on the higher side, averaging about 69%, the maximum being 89% at 5 AM and 42% being its lowest at 2 PM. Barometric pressure is its highest of 30.57inHg at 7 AM, a lowest point of 30.45inHg at 11 PM with an avg 30.52inHg.
- HI: 62°F
- LO: 39°F
- Rainfall: 11%
- Snowfall: 0%
- Wind
5.1 mph - Humidity
69% avg. - UV Index
5 - Air QualityTBA
- Sunrise
06:24 AM - Sunset
06:32 PM - Moonrise
05:20 PM - Moonset
03:11 AM - Moon Phase
Waxing Gibbous
This 5-Day weather forecast is valid for ZIP code 04915, accurately covering the area of Belfast, ME.
Currently
|
74°F |
29.94 inHg.
Barometer 39%
Humidity NW 21.6 mph Wind |
| Sunny | ||
National Outlook
Heavy Rain in North-Central U.S. & Scorching Heat in South-Central U.S. - 09-18 to 09-20
Fri Sep 18th 2026, 5:45am PDT
Read
Wet Weather with Possible Flood Concerns in the Southern Regions 09-21 to 09-25
Extended Forecast
Fri Sep 18th 2026, 5:56am PDT
Read
Fri Sep 18th 2026, 5:56am PDT
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