Monthly outlook for Clematis Brook Station, MA: average high 83.3°, average low 63.2°. That is 2.1° above the climate normal for August. Precipitation is expected on 6 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 24 August (91.7°), the coolest 15 August (56.6°).
83.3°/63.2°
Average high / low
+2.1°
Above normal
6 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.4°
80.2°
+1.2°
19 August – 28 August
84.6°
78.3°
+3.5°
29 August – 7 September
at normal
76.4°
—
August records over 66 years
100°2 August 1975All-time high
46.2°31 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Belmont (2 mi).
Mon, 1091° / 68°0.05
91 °
Clematis Brook Station, Monday, 10 August
Light rain. High 91°, low 68°.
Pressure29.94 inHg
Wind5.5 mph SW
Humidity33%
Visibility6.2 mi
Dew point56°
Tue, 1189° / 70°0
89 °
Clematis Brook Station, Tuesday, 11 August
Partly cloudy. High 89°, low 70°.
Pressure29.77 inHg
Wind10.3 mph NW
Humidity35%
Visibility6.2 mi
Dew point56°
Wed, 1277° / 65°0.04
77 °
Clematis Brook Station, Wednesday, 12 August
Light rain. High 77°, low 65°.
Pressure29.80 inHg
Wind3.6 mph N
Humidity45%
Visibility6.2 mi
Dew point54°
Thu, 1386° / 61°0
86 °
Clematis Brook Station, Thursday, 13 August
Partly cloudy. High 86°, low 61°.
Pressure29.74 inHg
Wind10.7 mph NW
Humidity39%
Visibility6.2 mi
Dew point55°
Fri, 1478° / 60°0
78 °
Clematis Brook Station, Friday, 14 August
Overcast. High 78°, low 60°.
Pressure30.03 inHg
Wind12 mph NW
Humidity31%
Visibility—
Dew point39°
Sat, 1579° / 57°0
79 °
Clematis Brook Station, Saturday, 15 August
Partly cloudy. High 79°, low 57°.
Pressure30.18 inHg
Wind6.3 mph SE
Humidity34%
Visibility—
Dew point42°
Sun, 1675° / 59°0.27
75 °
Clematis Brook Station, Sunday, 16 August
Rain. High 75°, low 59°.
Pressure30.00 inHg
Wind15.8 mph S
Humidity61%
Visibility—
Dew point59°
Mon, 1776° / 63°0.09
76 °
Clematis Brook Station, Monday, 17 August
Light rain. High 76°, low 63°.
Pressure29.80 inHg
Wind13 mph NW
Humidity63%
Visibility—
Dew point55°
Tue, 1885° / 61°0
85 °
Clematis Brook Station, Tuesday, 18 August
Partly cloudy. High 85°, low 61°.
Pressure30.09 inHg
Wind7.4 mph S
Humidity40%
Visibility—
Dew point51°
Wed, 1986° / 69°0.05
86 °
Clematis Brook Station, Wednesday, 19 August
Light rain. High 86°, low 69°.
Pressure29.85 inHg
Wind12.8 mph W
Humidity93%
Visibility—
Dew point69°
Thu, 2083° / 60°0
83 °
Clematis Brook Station, Thursday, 20 August
Clear. High 83°, low 60°.
Pressure29.94 inHg
Wind7.4 mph NW
Humidity42%
Visibility—
Dew point50°
Fri, 2184° / 66°0.04
84 °
Clematis Brook Station, Friday, 21 August
Light rain. High 84°, low 66°.
Pressure29.80 inHg
Wind13.3 mph SW
Humidity75%
Visibility—
Dew point64°
Sat, 2278° / 62°0
78 °
Clematis Brook Station, Saturday, 22 August
Overcast. High 78°, low 62°.
Pressure29.94 inHg
Wind7.6 mph E
Humidity62%
Visibility—
Dew point58°
Sun, 2385° / 60°0
85 °
Clematis Brook Station, Sunday, 23 August
Clear. High 85°, low 60°.
Pressure30.06 inHg
Wind8.9 mph S
Humidity43%
Visibility—
Dew point53°
Mon, 2492° / 62°0.02
92 °
Clematis Brook Station, Monday, 24 August
Light rain. High 92°, low 62°.
Pressure29.94 inHg
Wind9.6 mph SW
Humidity46%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.11
78 °
Clematis Brook Station, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation25%
Record high94° (2007)
Record low52° (1971)
Wed, 2680° / 62°0.06
80 °
Clematis Brook Station, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.06 in
Chance of precipitation17%
Record high94° (2021)
Record low51° (1981)
Thu, 2779° / 63°0.09
79 °
Clematis Brook Station, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.09 in
Chance of precipitation35%
Record high96° (1993)
Record low52° (1989)
Fri, 2878° / 63°0.12
78 °
Clematis Brook Station, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.12 in
Chance of precipitation30%
Record high94° (1993)
Record low53° (1986)
Sat, 2977° / 63°0.17
77 °
Clematis Brook Station, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.17 in
Chance of precipitation30%
Record high94° (2018)
Record low48° (1986)
Sun, 3078° / 62°0.13
78 °
Clematis Brook Station, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.13 in
Chance of precipitation25%
Record high92° (1973)
Record low48° (1965)
Mon, 3178° / 61°0.08
78 °
Clematis Brook Station, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.08 in
Chance of precipitation25%
Record high92° (1973)
Record low46° (1965)
Tue, 0176° / 61°0.06
76 °
Clematis Brook Station, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.06 in
Chance of precipitation23%
Record high93° (2010)
Record low50° (1975)
Wed, 0276° / 60°0.15
76 °
Clematis Brook Station, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.15 in
Chance of precipitation25%
Record high94° (2010)
Record low48° (2017)
Thu, 0376° / 60°0.12
76 °
Clematis Brook Station, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.12 in
Chance of precipitation32%
Record high93° (2018)
Record low50° (1967)
Fri, 0476° / 60°0.11
76 °
Clematis Brook Station, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation23%
Record high90° (1973)
Record low50° (1987)
Sat, 0576° / 60°0.07
76 °
Clematis Brook Station, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation17%
Record high93° (2018)
Record low50° (1994)
Sun, 0675° / 60°0.15
75 °
Clematis Brook Station, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.15 in
Chance of precipitation32%
Record high94° (2018)
Record low50° (2000)
Mon, 0776° / 59°0.11
76 °
Clematis Brook Station, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.11 in
Chance of precipitation25%
Record high93° (2023)
Record low47° (1962)
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 Clematis Brook Station, MA 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 Clematis Brook Station, MA 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.