As of 18:17 EDT

Weather in Winchester, MA

88°Current weather

Winchester, Saturday, 8 August, 18:17

Overcast. Feels like 95°. High 88°, low 72°.

Pressure29.83 inHg
Wind5 mph W
Humidity61%
Visibility6.2 mi
Dew point72°

Monthly outlook for Winchester, MA: average high 80.4°, average low 63.4°. That is 0.4° above the climate normal for August. Precipitation is expected on 7 days (about 3.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 9 August (95.2°), the coolest 16 August (56.6°).

80.4°/63.4°
Average high / low
+0.4°
Above normal
7 / 5
Wet days / normal
3.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August83.8°80.4°+1.9°
18 August – 27 August74.7°78.5°-2.1°
28 August – 6 Septemberat normal76.8°

August records over 66 years

100°2 August 1975All-time high
46.9°31 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Medford (3 mi).

Sun, 0995° / 73°0Clear
95 °Clear

Winchester, Sunday, 9 August

Clear. High 95°, low 73°.

Pressure29.88 inHg
Wind10.3 mph W
Humidity36%
Visibility6.2 mi
Dew point60°
Mon, 1092° / 70°0.05Light rain
92 °Light rain

Winchester, Monday, 10 August

Light rain. High 92°, low 70°.

Pressure29.94 inHg
Wind5.2 mph S
Humidity31%
Visibility6.2 mi
Dew point56°
Tue, 1191° / 70°0Mostly clear
91 °Mostly clear

Winchester, Tuesday, 11 August

Mostly clear. High 91°, low 70°.

Pressure29.77 inHg
Wind12.1 mph NW
Humidity32%
Visibility6.2 mi
Dew point55°
Wed, 1272° / 62°0.31Rain
72 °Rain

Winchester, Wednesday, 12 August

Rain. High 72°, low 62°.

Pressure29.77 inHg
Wind5.6 mph NE
Humidity93%
Visibility6.2 mi
Dew point63°
Thu, 1380° / 60°0.26Light rain
80 °Light rain

Winchester, Thursday, 13 August

Light rain. High 80°, low 60°.

Pressure29.71 inHg
Wind11.6 mph NW
Humidity73%
Visibility
Dew point65°
Fri, 1480° / 57°0Overcast
80 °Overcast

Winchester, Friday, 14 August

Overcast. High 80°, low 57°.

Pressure29.88 inHg
Wind8.7 mph NW
Humidity39%
Visibility
Dew point44°
Sat, 1577° / 58°0Clear
77 °Clear

Winchester, Saturday, 15 August

Clear. High 77°, low 58°.

Pressure30.09 inHg
Wind7.9 mph NW
Humidity37%
Visibility
Dew point44°
Sun, 1680° / 57°0Clear
80 °Clear

Winchester, Sunday, 16 August

Clear. High 80°, low 57°.

Pressure30.27 inHg
Wind9.5 mph S
Humidity30%
Visibility
Dew point40°
Mon, 1784° / 60°0Overcast
84 °Overcast

Winchester, Monday, 17 August

Overcast. High 84°, low 60°.

Pressure30.18 inHg
Wind9 mph SW
Humidity31%
Visibility
Dew point44°
Tue, 1874° / 65°1.11Heavy rain
74 °Heavy rain

Winchester, Tuesday, 18 August

Heavy rain. High 74°, low 65°.

Pressure30.03 inHg
Wind10.1 mph S
Humidity99%
Visibility
Dew point65°
Wed, 1977° / 64°0.02Light rain
77 °Light rain

Winchester, Wednesday, 19 August

Light rain. High 77°, low 64°.

Pressure29.85 inHg
Wind5.6 mph E
Humidity63%
Visibility
Dew point61°
Thu, 2076° / 63°0Overcast
76 °Overcast

Winchester, Thursday, 20 August

Overcast. High 76°, low 63°.

Pressure30.00 inHg
Wind7.8 mph SE
Humidity60%
Visibility
Dew point58°
Fri, 2176° / 61°0.94Heavy rain
76 °Heavy rain

Winchester, Friday, 21 August

Heavy rain. High 76°, low 61°.

Pressure30.00 inHg
Wind10.7 mph S
Humidity58%
Visibility
Dew point58°
Sat, 2274° / 64°1.07Rain
74 °Rain

Winchester, Saturday, 22 August

Rain. High 74°, low 64°.

Pressure29.77 inHg
Wind8.9 mph S
Humidity95%
Visibility
Dew point69°
Sun, 2372° / 58°0Clear
72 °Clear

Winchester, Sunday, 23 August

Clear. High 72°, low 58°.

Pressure29.77 inHg
Wind13.4 mph W
Humidity47%
Visibility
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 62°0.07Climate normal
78 °Climate normal

Winchester, Monday, 24 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high91° (1998)
Record low52° (1971)
Tue, 2578° / 62°0.11Climate normal
78 °Climate normal

Winchester, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation28%
Record high95° (1969)
Record low53° (1971)
Wed, 2680° / 62°0.06Climate normal
80 °Climate normal

Winchester, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high80°
Average low62°
Average precipitation0.06 in
Chance of precipitation18%
Record high93° (1993)
Record low50° (1981)
Thu, 2779° / 64°0.09Climate normal
79 °Climate normal

Winchester, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.09 in
Chance of precipitation32%
Record high96° (1993)
Record low52° (1989)
Fri, 2878° / 64°0.11Climate normal
78 °Climate normal

Winchester, Friday, 28 August

Climate normal for this date — 60-year average.

Average high78°
Average low64°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (1993)
Record low53° (1986)
Sat, 2977° / 63°0.17Climate normal
77 °Climate normal

Winchester, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high77°
Average low63°
Average precipitation0.17 in
Chance of precipitation30%
Record high95° (2018)
Record low48° (1986)
Sun, 3078° / 62°0.15Climate normal
78 °Climate normal

Winchester, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.15 in
Chance of precipitation23%
Record high93° (1973)
Record low48° (1986)
Mon, 3178° / 62°0.07Climate normal
78 °Climate normal

Winchester, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (2010)
Record low47° (1965)
Tue, 0176° / 61°0.05Climate normal
76 °Climate normal

Winchester, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high76°
Average low61°
Average precipitation0.05 in
Chance of precipitation23%
Record high93° (2010)
Record low50° (1975)
Wed, 0276° / 60°0.16Climate normal
76 °Climate normal

Winchester, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.16 in
Chance of precipitation25%
Record high94° (2010)
Record low50° (2017)
Thu, 0376° / 61°0.13Climate normal
76 °Climate normal

Winchester, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°
Average low61°
Average precipitation0.13 in
Chance of precipitation33%
Record high94° (2018)
Record low50° (1967)
Fri, 0476° / 61°0.12Climate normal
76 °Climate normal

Winchester, Friday, 4 September

Climate normal for this date — 60-year average.

Average high76°
Average low61°
Average precipitation0.12 in
Chance of precipitation22%
Record high90° (1973)
Record low51° (1987)
Sat, 0576° / 61°0.08Climate normal
76 °Climate normal

Winchester, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°
Average low61°
Average precipitation0.08 in
Chance of precipitation17%
Record high90° (1971)
Record low51° (1994)
Sun, 0675° / 60°0.16Climate normal
75 °Climate normal

Winchester, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°
Average low60°
Average precipitation0.16 in
Chance of precipitation33%
Record high95° (2018)
Record low50° (1965)

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 Winchester, 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 Winchester, 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.