As of 01:06 EDT

Weather in Siddonsburg, PA

73°Current weather

Siddonsburg, Sunday, 9 August, 01:06

Overcast. Feels like 74°. High 87°, low 71°.

Pressure30.00 inHg
Wind3.9 mph SW
Humidity92%
Visibility6.2 mi
Dew point70°

Monthly outlook for Siddonsburg, PA: average high 81.7°, average low 63.9°. That is 0.2° below the climate normal for August. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 10 August (89.6°), the coolest 22 August (53.5°).

81.7°/63.9°
Average high / low
−0.2°
Below normal
5 / 5
Wet days / normal
1.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August81.6°82.8°-0.7°
19 August – 28 August81.8°81.6°+0.1°
29 August – 7 Septemberat normal80.1°

August records over 66 years

98.4°12 August 2021All-time high
48°30 August 2025All-time low

Climate normals and records are computed from the nearest reference point — Messiah College (1 mi).

Mon, 1090° / 71°0.18Rain
90 °Rain

Siddonsburg, Monday, 10 August

Rain. High 90°, low 71°.

Pressure30.00 inHg
Wind4 mph NW
Humidity60%
Visibility6.2 mi
Dew point65°
Tue, 1188° / 68°0.39Rain
88 °Rain

Siddonsburg, Tuesday, 11 August

Rain. High 88°, low 68°.

Pressure29.94 inHg
Wind6.4 mph W
Humidity58%
Visibility6.2 mi
Dew point66°
Wed, 1284° / 69°0.02Light rain
84 °Light rain

Siddonsburg, Wednesday, 12 August

Light rain. High 84°, low 69°.

Pressure29.74 inHg
Wind9.8 mph W
Humidity70%
Visibility6.2 mi
Dew point68°
Thu, 1381° / 66°0Light rain
81 °Light rain

Siddonsburg, Thursday, 13 August

Light rain. High 81°, low 66°.

Pressure29.85 inHg
Wind13.9 mph NW
Humidity32%
Visibility
Dew point47°
Fri, 1480° / 57°0Clear
80 °Clear

Siddonsburg, Friday, 14 August

Clear. High 80°, low 57°.

Pressure30.03 inHg
Wind7.5 mph NW
Humidity35%
Visibility
Dew point46°
Sat, 1581° / 58°0Clear
81 °Clear

Siddonsburg, Saturday, 15 August

Clear. High 81°, low 58°.

Pressure30.18 inHg
Wind12.4 mph NW
Humidity34%
Visibility
Dew point46°
Sun, 1681° / 57°0Overcast
81 °Overcast

Siddonsburg, Sunday, 16 August

Overcast. High 81°, low 57°.

Pressure30.18 inHg
Wind5.9 mph E
Humidity38%
Visibility
Dew point51°
Mon, 1775° / 64°0.24Rain
75 °Rain

Siddonsburg, Monday, 17 August

Rain. High 75°, low 64°.

Pressure30.09 inHg
Wind8.6 mph S
Humidity63%
Visibility
Dew point61°
Tue, 1869° / 65°0.03Light rain
69 °Light rain

Siddonsburg, Tuesday, 18 August

Light rain. High 69°, low 65°.

Pressure30.06 inHg
Wind6.3 mph E
Humidity90%
Visibility
Dew point66°
Wed, 1984° / 66°0.24Rain
84 °Rain

Siddonsburg, Wednesday, 19 August

Rain. High 84°, low 66°.

Pressure29.88 inHg
Wind10.9 mph S
Humidity70%
Visibility
Dew point66°
Thu, 2075° / 65°0.47Rain
75 °Rain

Siddonsburg, Thursday, 20 August

Rain. High 75°, low 65°.

Pressure29.71 inHg
Wind15.3 mph NW
Humidity51%
Visibility
Dew point55°
Fri, 2179° / 59°0Clear
79 °Clear

Siddonsburg, Friday, 21 August

Clear. High 79°, low 59°.

Pressure29.91 inHg
Wind12.8 mph NW
Humidity33%
Visibility
Dew point44°
Sat, 2280° / 54°0Partly cloudy
80 °Partly cloudy

Siddonsburg, Saturday, 22 August

Partly cloudy. High 80°, low 54°.

Pressure30.06 inHg
Wind5.6 mph E
Humidity32%
Visibility
Dew point44°
Sun, 2386° / 64°0.01Light rain
86 °Light rain

Siddonsburg, Sunday, 23 August

Light rain. High 86°, low 64°.

Pressure29.91 inHg
Wind10.1 mph S
Humidity51%
Visibility
Dew point63°
Mon, 2486° / 69°0Clear
86 °Clear

Siddonsburg, Monday, 24 August

Clear. High 86°, low 69°.

Pressure29.91 inHg
Wind13.4 mph NW
Humidity35%
Visibility
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.05Climate normal
82 °Climate normal

Siddonsburg, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°
Average low64°
Average precipitation0.05 in
Chance of precipitation20%
Record high94° (2007)
Record low53° (1971)
Wed, 2683° / 64°0.05Climate normal
83 °Climate normal

Siddonsburg, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°
Average low64°
Average precipitation0.05 in
Chance of precipitation23%
Record high93° (1975)
Record low54° (1963)
Thu, 2783° / 65°0.15Climate normal
83 °Climate normal

Siddonsburg, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.15 in
Chance of precipitation38%
Record high94° (2020)
Record low52° (2025)
Fri, 2883° / 66°0.17Climate normal
83 °Climate normal

Siddonsburg, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.17 in
Chance of precipitation38%
Record high96° (2024)
Record low51° (2025)
Sat, 2982° / 65°0.09Climate normal
82 °Climate normal

Siddonsburg, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation37%
Record high92° (1973)
Record low48° (1982)
Sun, 3081° / 64°0.06Climate normal
81 °Climate normal

Siddonsburg, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation23%
Record high93° (1991)
Record low48° (2025)
Mon, 3181° / 64°0.08Climate normal
81 °Climate normal

Siddonsburg, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1973)
Record low51° (2025)
Tue, 0179° / 63°0.12Climate normal
79 °Climate normal

Siddonsburg, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high79°
Average low63°
Average precipitation0.12 in
Chance of precipitation25%
Record high93° (2010)
Record low50° (1967)
Wed, 0280° / 63°0.12Climate normal
80 °Climate normal

Siddonsburg, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.12 in
Chance of precipitation35%
Record high95° (1980)
Record low52° (1967)
Thu, 0381° / 62°0.06Climate normal
81 °Climate normal

Siddonsburg, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°
Average low62°
Average precipitation0.06 in
Chance of precipitation20%
Record high92° (1993)
Record low49° (1967)
Fri, 0480° / 63°0.11Climate normal
80 °Climate normal

Siddonsburg, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation27%
Record high94° (2023)
Record low52° (1997)
Sat, 0579° / 63°0.07Climate normal
79 °Climate normal

Siddonsburg, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high79°
Average low63°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (2023)
Record low51° (1974)
Sun, 0679° / 62°0.18Climate normal
79 °Climate normal

Siddonsburg, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high79°
Average low62°
Average precipitation0.18 in
Chance of precipitation30%
Record high94° (2023)
Record low50° (2000)
Mon, 0780° / 62°0.11Climate normal
80 °Climate normal

Siddonsburg, Monday, 7 September

Climate normal for this date — 60-year average.

Average high80°
Average low62°
Average precipitation0.11 in
Chance of precipitation22%
Record high91° (2016)
Record low48° (1984)

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 Siddonsburg, 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 Siddonsburg, 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.