EN
English Español

As of 05:57 EDT

Weather in Mount Gretna Heights, PA

69°Current weather

Mount Gretna Heights, Sunday, 9 August, 05:57

Mostly clear. Feels like 70°. High 85°, low 69°.

Pressure29.97 inHg
Wind5 mph W
Humidity95%
Visibility6.2 mi
Dew point67°
Mon, 1083° / 68°0Partly cloudy
83 °Partly cloudy

Mount Gretna Heights, Monday, 10 August

Partly cloudy. High 83°, low 68°.

Pressure30.00 inHg
Wind6.6 mph W
Humidity55%
Visibility6.2 mi
Dew point65°
Tue, 1185° / 67°0.5Heavy rain
85 °Heavy rain

Mount Gretna Heights, Tuesday, 11 August

Heavy rain. High 85°, low 67°.

Pressure29.91 inHg
Wind11.7 mph NW
Humidity61%
Visibility6.2 mi
Dew point66°
Wed, 1284° / 67°0.04Light rain
84 °Light rain

Mount Gretna Heights, Wednesday, 12 August

Light rain. High 84°, low 67°.

Pressure29.80 inHg
Wind11.1 mph NW
Humidity74%
Visibility6.2 mi
Dew point67°
Thu, 1380° / 62°0.12Light rain
80 °Light rain

Mount Gretna Heights, Thursday, 13 August

Light rain. High 80°, low 62°.

Pressure29.80 inHg
Wind14.9 mph NW
Humidity41%
Visibility—
Dew point53°
Fri, 1476° / 55°0Overcast
76 °Overcast

Mount Gretna Heights, Friday, 14 August

Overcast. High 76°, low 55°.

Pressure30.03 inHg
Wind11.9 mph NW
Humidity43%
Visibility—
Dew point48°
Sat, 1574° / 53°0Clear
74 °Clear

Mount Gretna Heights, Saturday, 15 August

Clear. High 74°, low 53°.

Pressure30.15 inHg
Wind14.1 mph NW
Humidity41%
Visibility—
Dew point46°
Sun, 1677° / 52°0Overcast
77 °Overcast

Mount Gretna Heights, Sunday, 16 August

Overcast. High 77°, low 52°.

Pressure30.15 inHg
Wind4.9 mph NW
Humidity39%
Visibility—
Dew point47°
Mon, 1774° / 55°0Partly cloudy
74 °Partly cloudy

Mount Gretna Heights, Monday, 17 August

Partly cloudy. High 74°, low 55°.

Pressure30.00 inHg
Wind7.1 mph SE
Humidity58%
Visibility—
Dew point57°
Tue, 1880° / 59°0.01Light rain
80 °Light rain

Mount Gretna Heights, Tuesday, 18 August

Light rain. High 80°, low 59°.

Pressure30.03 inHg
Wind5.7 mph E
Humidity54%
Visibility—
Dew point60°
Wed, 1983° / 61°0Clear
83 °Clear

Mount Gretna Heights, Wednesday, 19 August

Clear. High 83°, low 61°.

Pressure30.09 inHg
Wind8.3 mph SE
Humidity52%
Visibility—
Dew point61°
Thu, 2087° / 62°0Partly cloudy
87 °Partly cloudy

Mount Gretna Heights, Thursday, 20 August

Partly cloudy. High 87°, low 62°.

Pressure30.00 inHg
Wind10.5 mph SE
Humidity46%
Visibility—
Dew point60°
Fri, 2196° / 67°0.17Rain
96 °Rain

Mount Gretna Heights, Friday, 21 August

Rain. High 96°, low 67°.

Pressure29.85 inHg
Wind6.9 mph S
Humidity52%
Visibility—
Dew point67°
Sat, 2290° / 71°0Clear
90 °Clear

Mount Gretna Heights, Saturday, 22 August

Clear. High 90°, low 71°.

Pressure29.91 inHg
Wind8.9 mph N
Humidity37%
Visibility—
Dew point58°
Sun, 2394° / 66°0Clear
94 °Clear

Mount Gretna Heights, Sunday, 23 August

Clear. High 94°, low 66°.

Pressure29.94 inHg
Wind8.7 mph E
Humidity40%
Visibility—
Dew point61°
Mon, 2483° / 69°0.21Light rain
83 °Light rain

Mount Gretna Heights, Monday, 24 August

Light rain. High 83°, low 69°.

Pressure30.00 inHg
Wind7.1 mph E
Humidity71%
Visibility—
Dew point70°

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 Mount Gretna Heights, PA 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 Mount Gretna Heights, PA 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.