As of 01:15 EDT

Weather in Petersham, MA

30°Current weather

Petersham, Sunday, 18 October, 01:15

Clear. Feels like 28°. High 53°, low 28°.

Pressure30.42 inHg
Wind3 mph NW
Humidity88%
Visibility6.2 mi
Dew point28°

Monthly outlook for Petersham, MA: average high 57.4°, average low 38.4°. That is 1.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 30 October (70.3°), the coolest 18 October (28.4°).

57.4°/38.4°
Average high / low
+1.2°
Above normal
4 / 5
Wet days / normal
1.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October55.8°56.2°-0.2°
28 October – 6 November59.9°52.8°+3.9°
7 November – 16 Novemberat normal47.8°—

October records over 66 years

83.1°5 October 2007All-time high
22.6°31 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Erving (15 mi).

Mon, 1961° / 36°0Overcast
61 °Overcast

Petersham, Monday, 19 October

Overcast. High 61°, low 36°.

Pressure30.39 inHg
Wind4.2 mph NE
Humidity40%
Visibility6.2 mi
Dew point33°
Tue, 2061° / 43°0Clear
61 °Clear

Petersham, Tuesday, 20 October

Clear. High 61°, low 43°.

Pressure30.24 inHg
Wind9.2 mph N
Humidity47%
Visibility6.2 mi
Dew point39°
Wed, 2155° / 37°0Clear
55 °Clear

Petersham, Wednesday, 21 October

Clear. High 55°, low 37°.

Pressure30.33 inHg
Wind6.5 mph NE
Humidity49%
Visibility6.2 mi
Dew point32°
Thu, 2259° / 33°0Clear
59 °Clear

Petersham, Thursday, 22 October

Clear. High 59°, low 33°.

Pressure30.09 inHg
Wind10.6 mph N
Humidity48%
Visibility—
Dew point30°
Fri, 2349° / 35°0Clear
49 °Clear

Petersham, Friday, 23 October

Clear. High 49°, low 35°.

Pressure30.39 inHg
Wind10.8 mph N
Humidity61%
Visibility—
Dew point29°
Sat, 2452° / 31°0Clear
52 °Clear

Petersham, Saturday, 24 October

Clear. High 52°, low 31°.

Pressure30.62 inHg
Wind5.9 mph NE
Humidity33%
Visibility—
Dew point16°
Sun, 2557° / 32°0Overcast
57 °Overcast

Petersham, Sunday, 25 October

Overcast. High 57°, low 32°.

Pressure30.50 inHg
Wind10.8 mph SW
Humidity57%
Visibility—
Dew point33°
Mon, 2655° / 38°0Overcast
55 °Overcast

Petersham, Monday, 26 October

Overcast. High 55°, low 38°.

Pressure30.15 inHg
Wind11.9 mph W
Humidity68%
Visibility—
Dew point43°
Tue, 2756° / 35°0Clear
56 °Clear

Petersham, Tuesday, 27 October

Clear. High 56°, low 35°.

Pressure30.24 inHg
Wind10 mph NW
Humidity49%
Visibility—
Dew point29°
Wed, 2858° / 37°0Clear
58 °Clear

Petersham, Wednesday, 28 October

Clear. High 58°, low 37°.

Pressure30.30 inHg
Wind3.8 mph NW
Humidity55%
Visibility—
Dew point35°
Thu, 2960° / 39°0Overcast
60 °Overcast

Petersham, Thursday, 29 October

Overcast. High 60°, low 39°.

Pressure30.27 inHg
Wind9.4 mph SW
Humidity53%
Visibility—
Dew point36°
Fri, 3070° / 51°0.06Light rain
70 °Light rain

Petersham, Friday, 30 October

Light rain. High 70°, low 51°.

Pressure29.94 inHg
Wind13 mph SW
Humidity69%
Visibility—
Dew point50°
Sat, 3160° / 44°0.04Light rain
60 °Light rain

Petersham, Saturday, 31 October

Light rain. High 60°, low 44°.

Pressure30.09 inHg
Wind14.3 mph NW
Humidity57%
Visibility—
Dew point40°
Sun, 0151° / 42°1.09Heavy rain
51 °Heavy rain

Petersham, Sunday, 1 November

Heavy rain. High 51°, low 42°.

Pressure30.30 inHg
Wind9.4 mph SE
Humidity68%
Visibility—
Dew point38°
Mon, 0260° / 52°0.09Light rain
60 °Light rain

Petersham, Monday, 2 November

Light rain. High 60°, low 52°.

Pressure29.88 inHg
Wind13.5 mph NW
Humidity83%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0354° / 38°0.15Climate normal
54 °Climate normal

Petersham, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°
Average low38°
Average precipitation0.15 in
Chance of precipitation35%
Record high69° (2017)
Record low26° (2002)
Wed, 0452° / 38°0.06Climate normal
52 °Climate normal

Petersham, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1987)
Record low27° (2013)
Thu, 0552° / 38°0.14Climate normal
52 °Climate normal

Petersham, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.14 in
Chance of precipitation40%
Record high73° (2022)
Record low27° (1965)
Fri, 0651° / 38°0.13Climate normal
51 °Climate normal

Petersham, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.13 in
Chance of precipitation37%
Record high75° (2024)
Record low26° (2021)
Sat, 0750° / 36°0.06Climate normal
50 °Climate normal

Petersham, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high70° (2020)
Record low25° (1962)
Sun, 0849° / 36°0.12Climate normal
49 °Climate normal

Petersham, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation32%
Record high69° (2020)
Record low24° (2019)
Mon, 0949° / 35°0.1Climate normal
49 °Climate normal

Petersham, Monday, 9 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.1 in
Chance of precipitation27%
Record high69° (2020)
Record low21° (2019)
Tue, 1050° / 36°0.14Climate normal
50 °Climate normal

Petersham, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.14 in
Chance of precipitation43%
Record high71° (2020)
Record low22° (2017)
Wed, 1148° / 36°0.15Climate normal
48 °Climate normal

Petersham, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.15 in
Chance of precipitation38%
Record high68° (2020)
Record low18° (2017)
Thu, 1247° / 34°0.15Climate normal
47 °Climate normal

Petersham, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.15 in
Chance of precipitation37%
Record high66° (2022)
Record low20° (2019)
Fri, 1346° / 33°0.17Climate normal
46 °Climate normal

Petersham, Friday, 13 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.17 in
Chance of precipitation42%
Record high66° (1964)
Record low13° (2019)
Sat, 1446° / 32°0.13Climate normal
46 °Climate normal

Petersham, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.13 in
Chance of precipitation27%
Record high64° (1989)
Record low11° (1986)
Sun, 1547° / 33°0.12Climate normal
47 °Climate normal

Petersham, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.12 in
Chance of precipitation45%
Record high69° (1993)
Record low18° (1967)
Mon, 1646° / 32°0.15Climate normal
46 °Climate normal

Petersham, Monday, 16 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.15 in
Chance of precipitation30%
Record high65° (2005)
Record low14° (1967)

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 Petersham, 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 Petersham, 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.