Portland Weather Forecast
- 61
- 79
Slight Chance Rain Showers
- 62
- 75
Rain Showers Likely
- 60
- 81
Rain Showers Likely
- 56
- 80
Mostly Sunny
- 57
- 80
Mostly Sunny
- 63
- 81
Chance Rain Showers
Today 21 Aug Northern Middlesex
Mostly cloudy this Morning, then becoming partly sunny. A 20 percent chance of Showers. Highs in the upper 70s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.
Tonight 21 Aug Northern Middlesex
Partly cloudy. A slight chance of Showers in the evening. Lows in the lower 60s. North Winds around 5 Mph. Chance of rain 20 percent.
Portland Temperature Statistics
August Temperature
Meriden, Meriden Markham Municipal Airport (10.6 miles)
Lowest 16 August, 2026
57.9 °FAverage August
74.4 °FHighest 7 August, 2026
91 °F
Climate (2021–2026)
Meriden, Meriden Markham Municipal Airport (10.6 miles)
Average Low 2021–2026
42.9 °FAverage 2021–2026
53.1 °FAverage High 2021–2026
63 °F