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As of 19:50 EDT

Weather in Petersham, MA

69°Current weather

Petersham, Saturday, 8 August, 19:50

Overcast. Feels like 70°. High 86°, low 69°.

Pressure29.91 inHg
Wind4.8 mph S
Humidity95%
Visibility6.2 mi
Dew point67°
Sun, 0989° / 69°0Clear
89 °Clear

Petersham, Sunday, 9 August

Clear. High 89°, low 69°.

Pressure29.91 inHg
Wind10.6 mph W
Humidity42%
Visibility6.2 mi
Dew point60°
Mon, 1086° / 65°0.05Light rain
86 °Light rain

Petersham, Monday, 10 August

Light rain. High 86°, low 65°.

Pressure29.97 inHg
Wind8.8 mph SW
Humidity41%
Visibility6.2 mi
Dew point56°
Tue, 1184° / 65°0Mostly clear
84 °Mostly clear

Petersham, Tuesday, 11 August

Mostly clear. High 84°, low 65°.

Pressure29.85 inHg
Wind12.2 mph NW
Humidity48%
Visibility6.2 mi
Dew point58°
Wed, 1269° / 60°0.13Light rain
69 °Light rain

Petersham, Wednesday, 12 August

Light rain. High 69°, low 60°.

Pressure29.80 inHg
Wind4.1 mph NE
Humidity95%
Visibility6.2 mi
Dew point61°
Thu, 1379° / 58°0.08Light rain
79 °Light rain

Petersham, Thursday, 13 August

Light rain. High 79°, low 58°.

Pressure29.74 inHg
Wind14.7 mph NW
Humidity96%
Visibility—
Dew point66°
Fri, 1474° / 51°0Clear
74 °Clear

Petersham, Friday, 14 August

Clear. High 74°, low 51°.

Pressure29.91 inHg
Wind12.4 mph NW
Humidity43%
Visibility—
Dew point43°
Sat, 1574° / 49°0Clear
74 °Clear

Petersham, Saturday, 15 August

Clear. High 74°, low 49°.

Pressure30.12 inHg
Wind9.1 mph N
Humidity40%
Visibility—
Dew point40°
Sun, 1675° / 50°0Overcast
75 °Overcast

Petersham, Sunday, 16 August

Overcast. High 75°, low 50°.

Pressure30.30 inHg
Wind4.8 mph NW
Humidity40%
Visibility—
Dew point42°
Mon, 1778° / 53°0Overcast
78 °Overcast

Petersham, Monday, 17 August

Overcast. High 78°, low 53°.

Pressure30.21 inHg
Wind8.6 mph S
Humidity43%
Visibility—
Dew point47°
Tue, 1873° / 62°0.38Rain
73 °Rain

Petersham, Tuesday, 18 August

Rain. High 73°, low 62°.

Pressure30.00 inHg
Wind8.2 mph SW
Humidity99%
Visibility—
Dew point64°
Wed, 1980° / 60°0Mostly clear
80 °Mostly clear

Petersham, Wednesday, 19 August

Mostly clear. High 80°, low 60°.

Pressure29.85 inHg
Wind6.4 mph NW
Humidity57%
Visibility—
Dew point57°
Thu, 2074° / 59°0.11Light rain
74 °Light rain

Petersham, Thursday, 20 August

Light rain. High 74°, low 59°.

Pressure30.00 inHg
Wind7.3 mph SE
Humidity61%
Visibility—
Dew point57°
Fri, 2170° / 58°1.07Rain
70 °Rain

Petersham, Friday, 21 August

Rain. High 70°, low 58°.

Pressure30.00 inHg
Wind9.6 mph S
Humidity84%
Visibility—
Dew point63°
Sat, 2279° / 62°0.73Heavy rain
79 °Heavy rain

Petersham, Saturday, 22 August

Heavy rain. High 79°, low 62°.

Pressure29.77 inHg
Wind10 mph NW
Humidity84%
Visibility—
Dew point65°
Sun, 2367° / 53°0.01Light rain
67 °Light rain

Petersham, Sunday, 23 August

Light rain. High 67°, low 53°.

Pressure29.83 inHg
Wind16.2 mph NW
Humidity50%
Visibility—
Dew point42°

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.