Monthly outlook for North Windham, ME: average high 78.8°, average low 59.5°. That is 2.4° above the climate normal for August. Precipitation is expected on 9 days (about 1.8 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (91.8°), the coolest 16 August (51.3°).
78.8°/59.5°
Average high / low
+2.4°
Above normal
9 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81°
75.1°
+3.3°
18 August – 27 August
75°
73.5°
+0.9°
28 August – 6 September
at normal
71.8°
—
August records over 66 years
93.6°12 August 2025All-time high
48°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Portland (13 mi).
Sun, 0992° / 69°0
92 °
North Windham, Sunday, 9 August
Clear. High 92°, low 69°.
Pressure29.83 inHg
Wind4.8 mph W
Humidity43%
Visibility6.2 mi
Dew point64°
Mon, 1089° / 65°0.13
89 °
North Windham, Monday, 10 August
Rain. High 89°, low 65°.
Pressure29.94 inHg
Wind7 mph S
Humidity36%
Visibility6.2 mi
Dew point56°
Tue, 1185° / 63°0.09
85 °
North Windham, Tuesday, 11 August
Rain. High 85°, low 63°.
Pressure29.74 inHg
Wind11.6 mph NW
Humidity43%
Visibility6.2 mi
Dew point58°
Wed, 1276° / 60°0.09
76 °
North Windham, Wednesday, 12 August
Light rain. High 76°, low 60°.
Pressure29.80 inHg
Wind5.2 mph S
Humidity77%
Visibility6.2 mi
Dew point60°
Thu, 1378° / 56°0.26
78 °
North Windham, Thursday, 13 August
Rain. High 78°, low 56°.
Pressure29.68 inHg
Wind11.3 mph W
Humidity60%
Visibility—
Dew point60°
Fri, 1473° / 52°0
73 °
North Windham, Friday, 14 August
Clear. High 73°, low 52°.
Pressure29.83 inHg
Wind9 mph NW
Humidity48%
Visibility—
Dew point45°
Sat, 1576° / 56°0
76 °
North Windham, Saturday, 15 August
Clear. High 76°, low 56°.
Pressure30.06 inHg
Wind11 mph NW
Humidity38%
Visibility—
Dew point42°
Sun, 1678° / 51°0
78 °
North Windham, Sunday, 16 August
Mostly clear. High 78°, low 51°.
Pressure30.24 inHg
Wind5.3 mph SW
Humidity33%
Visibility—
Dew point40°
Mon, 1780° / 55°0
80 °
North Windham, Monday, 17 August
Overcast. High 80°, low 55°.
Pressure30.15 inHg
Wind8.9 mph SW
Humidity46%
Visibility—
Dew point50°
Tue, 1875° / 61°0.27
75 °
North Windham, Tuesday, 18 August
Rain. High 75°, low 61°.
Pressure30.00 inHg
Wind8.4 mph S
Humidity99%
Visibility—
Dew point62°
Wed, 1977° / 59°0.02
77 °
North Windham, Wednesday, 19 August
Light rain. High 77°, low 59°.
Pressure29.85 inHg
Wind5.3 mph N
Humidity57%
Visibility—
Dew point57°
Thu, 2080° / 57°0
80 °
North Windham, Thursday, 20 August
Clear. High 80°, low 57°.
Pressure30.00 inHg
Wind7.3 mph S
Humidity37%
Visibility—
Dew point45°
Fri, 2176° / 61°0.14
76 °
North Windham, Friday, 21 August
Light rain. High 76°, low 61°.
Pressure29.97 inHg
Wind10.5 mph S
Humidity56%
Visibility—
Dew point57°
Sat, 2274° / 63°0.48
74 °
North Windham, Saturday, 22 August
Rain. High 74°, low 63°.
Pressure29.77 inHg
Wind9.4 mph SE
Humidity99%
Visibility—
Dew point66°
Sun, 2368° / 53°0.05
68 °
North Windham, Sunday, 23 August
Light rain. High 68°, low 53°.
Pressure29.68 inHg
Wind13.6 mph NW
Humidity60%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2473° / 62°0.07
73 °
North Windham, Monday, 24 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high82° (1980)
Record low53° (1971)
Tue, 2573° / 62°0.11
73 °
North Windham, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.11 in
Chance of precipitation32%
Record high86° (2020)
Record low53° (1989)
Wed, 2674° / 62°0.04
74 °
North Windham, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.04 in
Chance of precipitation17%
Record high86° (2021)
Record low54° (2019)
Thu, 2774° / 62°0.05
74 °
North Windham, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.05 in
Chance of precipitation27%
Record high84° (1983)
Record low52° (2019)
Fri, 2873° / 62°0.14
73 °
North Windham, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.14 in
Chance of precipitation28%
Record high90° (2018)
Record low54° (2025)
Sat, 2972° / 62°0.15
72 °
North Windham, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low62°
Average precipitation0.15 in
Chance of precipitation28%
Record high86° (2010)
Record low49° (1982)
Sun, 3073° / 61°0.14
73 °
North Windham, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.14 in
Chance of precipitation27%
Record high86° (2010)
Record low48° (1965)
Mon, 3173° / 61°0.09
73 °
North Windham, Monday, 31 August
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.09 in
Chance of precipitation22%
Record high89° (2010)
Record low48° (1965)
Tue, 0172° / 60°0.03
72 °
North Windham, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low60°
Average precipitation0.03 in
Chance of precipitation18%
Record high85° (2010)
Record low50° (2017)
Wed, 0271° / 60°0.11
71 °
North Windham, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.11 in
Chance of precipitation28%
Record high87° (2010)
Record low49° (2017)
Thu, 0371° / 60°0.11
71 °
North Windham, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.11 in
Chance of precipitation30%
Record high87° (2018)
Record low52° (2024)
Fri, 0471° / 60°0.14
71 °
North Windham, Friday, 4 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.14 in
Chance of precipitation33%
Record high83° (2023)
Record low53° (1965)
Sat, 0571° / 60°0.08
71 °
North Windham, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.08 in
Chance of precipitation22%
Record high89° (2023)
Record low50° (1963)
Sun, 0670° / 60°0.12
70 °
North Windham, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low60°
Average precipitation0.12 in
Chance of precipitation32%
Record high89° (2018)
Record low50° (2000)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for North Windham, ME are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in North Windham, ME since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.