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As of 12:13 EDT

Weather in Principio Furnace, MD

89°Current weather

Principio Furnace, Sunday, 9 August, 12:13

Mostly clear. Feels like 102°. High 89°, low 73°.

Pressure30.03 inHg
Wind8.2 mph NW
Humidity71%
Visibility6.2 mi
Dew point77°
Mon, 1087° / 72°0Light rain
87 °Light rain

Principio Furnace, Monday, 10 August

Light rain. High 87°, low 72°.

Pressure30.00 inHg
Wind5.5 mph SW
Humidity41%
Visibility6.2 mi
Dew point64°
Tue, 1189° / 68°0.05Light rain
89 °Light rain

Principio Furnace, Tuesday, 11 August

Light rain. High 89°, low 68°.

Pressure29.91 inHg
Wind11.7 mph NW
Humidity56%
Visibility6.2 mi
Dew point66°
Wed, 1286° / 69°0Light rain
86 °Light rain

Principio Furnace, Wednesday, 12 August

Light rain. High 86°, low 69°.

Pressure29.83 inHg
Wind3.9 mph W
Humidity62%
Visibility6.2 mi
Dew point67°
Thu, 1384° / 69°0Overcast
84 °Overcast

Principio Furnace, Thursday, 13 August

Overcast. High 84°, low 69°.

Pressure29.83 inHg
Wind15.3 mph NW
Humidity55%
Visibility6.2 mi
Dew point65°
Fri, 1471° / 60°0Overcast
71 °Overcast

Principio Furnace, Friday, 14 August

Overcast. High 71°, low 60°.

Pressure30.06 inHg
Wind6.4 mph NW
Humidity50%
Visibility—
Dew point51°
Sat, 1575° / 56°0Overcast
75 °Overcast

Principio Furnace, Saturday, 15 August

Overcast. High 75°, low 56°.

Pressure30.18 inHg
Wind12.8 mph N
Humidity38%
Visibility—
Dew point46°
Sun, 1675° / 56°0Overcast
75 °Overcast

Principio Furnace, Sunday, 16 August

Overcast. High 75°, low 56°.

Pressure30.18 inHg
Wind6.3 mph N
Humidity50%
Visibility—
Dew point52°
Mon, 1777° / 64°0.04Light rain
77 °Light rain

Principio Furnace, Monday, 17 August

Light rain. High 77°, low 64°.

Pressure29.88 inHg
Wind9.7 mph N
Humidity66%
Visibility—
Dew point63°
Tue, 1882° / 60°0Partly cloudy
82 °Partly cloudy

Principio Furnace, Tuesday, 18 August

Partly cloudy. High 82°, low 60°.

Pressure29.97 inHg
Wind6 mph N
Humidity38%
Visibility—
Dew point51°
Wed, 1986° / 63°0.34Rain
86 °Rain

Principio Furnace, Wednesday, 19 August

Rain. High 86°, low 63°.

Pressure29.83 inHg
Wind12.7 mph SW
Humidity49%
Visibility—
Dew point62°
Thu, 2086° / 66°0Mostly clear
86 °Mostly clear

Principio Furnace, Thursday, 20 August

Mostly clear. High 86°, low 66°.

Pressure29.74 inHg
Wind10.4 mph NW
Humidity45%
Visibility—
Dew point60°
Fri, 2183° / 62°0Mostly clear
83 °Mostly clear

Principio Furnace, Friday, 21 August

Mostly clear. High 83°, low 62°.

Pressure29.88 inHg
Wind7.3 mph N
Humidity41%
Visibility—
Dew point53°
Sat, 2288° / 64°0Clear
88 °Clear

Principio Furnace, Saturday, 22 August

Clear. High 88°, low 64°.

Pressure29.94 inHg
Wind12.9 mph S
Humidity51%
Visibility—
Dew point63°
Sun, 2388° / 71°0Clear
88 °Clear

Principio Furnace, Sunday, 23 August

Clear. High 88°, low 71°.

Pressure29.88 inHg
Wind15.4 mph S
Humidity36%
Visibility—
Dew point56°
Mon, 2480° / 59°0Clear
80 °Clear

Principio Furnace, Monday, 24 August

Clear. High 80°, low 59°.

Pressure30.15 inHg
Wind7.4 mph N
Humidity36%
Visibility—
Dew point48°

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 Principio Furnace, MD 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 Principio Furnace, MD 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.