As of 15:38 EDT

Weather in Newcastle, FL

88°Current weather

Newcastle, Saturday, 8 August, 15:38

Heavy rain. Feels like 100°. High 88°, low 72°.

Pressure30.09 inHg
Wind10.1 mph E
Humidity69%
Visibility6.2 mi
Dew point77°

Monthly outlook for Newcastle, FL: average high 96.5°, average low 78.2°. That is 4.8° above the climate normal for August. Precipitation is expected on 6 days (about 2.9 inches), against a normal of 11 days and 3.0 inches. The warmest day looks like 13 August (102°), the coolest 9 August (70.7°).

96.5°/78.2°
Average high / low
+4.8°
Above normal
6 / 11
Wet days / normal
2.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August96.2°87.8°+4.7°
18 August – 27 August96.9°87.2°+5.4°
28 August – 6 Septemberat normal85.7°

August records over 66 years

100.9°1 August 1999All-time high
67.6°19 August 1960All-time low

Climate normals and records are computed from the nearest reference point — Jacksonville (6 mi).

Sun, 0989° / 71°0.34Rain
89 °Rain

Newcastle, Sunday, 9 August

Rain. High 89°, low 71°.

Pressure30.12 inHg
Wind1.9 mph S
Humidity61%
Visibility6.2 mi
Dew point73°
Mon, 1096° / 73°0.13Light rain
96 °Light rain

Newcastle, Monday, 10 August

Light rain. High 96°, low 73°.

Pressure30.15 inHg
Wind3.8 mph SW
Humidity49%
Visibility6.2 mi
Dew point72°
Tue, 11100° / 78°0.01Light rain
100 °Light rain

Newcastle, Tuesday, 11 August

Light rain. High 100°, low 78°.

Pressure30.12 inHg
Wind5.3 mph W
Humidity41%
Visibility6.2 mi
Dew point69°
Wed, 12102° / 81°0Clear
102 °Clear

Newcastle, Wednesday, 12 August

Clear. High 102°, low 81°.

Pressure30.03 inHg
Wind8.8 mph W
Humidity34%
Visibility6.2 mi
Dew point63°
Thu, 13102° / 81°0Clear
102 °Clear

Newcastle, Thursday, 13 August

Clear. High 102°, low 81°.

Pressure30.00 inHg
Wind10.1 mph W
Humidity27%
Visibility
Dew point58°
Fri, 14102° / 81°0Clear
102 °Clear

Newcastle, Friday, 14 August

Clear. High 102°, low 81°.

Pressure30.06 inHg
Wind11.7 mph W
Humidity29%
Visibility
Dew point60°
Sat, 1599° / 78°1.42Heavy rain
99 °Heavy rain

Newcastle, Saturday, 15 August

Heavy rain. High 99°, low 78°.

Pressure30.12 inHg
Wind10.6 mph NE
Humidity35%
Visibility
Dew point64°
Sun, 1693° / 78°0.02Light rain
93 °Light rain

Newcastle, Sunday, 16 August

Light rain. High 93°, low 78°.

Pressure30.15 inHg
Wind9.8 mph E
Humidity45%
Visibility
Dew point67°
Mon, 1790° / 78°0.06Light rain
90 °Light rain

Newcastle, Monday, 17 August

Light rain. High 90°, low 78°.

Pressure30.15 inHg
Wind11 mph NE
Humidity48%
Visibility
Dew point67°
Tue, 1896° / 78°0Mostly clear
96 °Mostly clear

Newcastle, Tuesday, 18 August

Mostly clear. High 96°, low 78°.

Pressure30.06 inHg
Wind7.8 mph SE
Humidity38%
Visibility
Dew point64°
Wed, 1996° / 80°0Overcast
96 °Overcast

Newcastle, Wednesday, 19 August

Overcast. High 96°, low 80°.

Pressure29.97 inHg
Wind11.4 mph W
Humidity35%
Visibility
Dew point62°
Thu, 2094° / 81°0Overcast
94 °Overcast

Newcastle, Thursday, 20 August

Overcast. High 94°, low 81°.

Pressure29.94 inHg
Wind10.2 mph SW
Humidity46%
Visibility
Dew point68°
Fri, 2198° / 80°0.01Light rain
98 °Light rain

Newcastle, Friday, 21 August

Light rain. High 98°, low 80°.

Pressure29.91 inHg
Wind11.6 mph W
Humidity36%
Visibility
Dew point64°
Sat, 2299° / 81°0.01Light rain
99 °Light rain

Newcastle, Saturday, 22 August

Light rain. High 99°, low 81°.

Pressure29.88 inHg
Wind9.6 mph W
Humidity38%
Visibility
Dew point67°
Sun, 2399° / 79°0.27Rain
99 °Rain

Newcastle, Sunday, 23 August

Rain. High 99°, low 79°.

Pressure29.91 inHg
Wind8.7 mph E
Humidity36%
Visibility
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2487° / 75°0.16Climate normal
87 °Climate normal

Newcastle, Monday, 24 August

Climate normal for this date — 60-year average.

Average high87°
Average low75°
Average precipitation0.16 in
Chance of precipitation68%
Record high95° (1987)
Record low69° (2012)
Tue, 2586° / 75°0.2Climate normal
86 °Climate normal

Newcastle, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high86°
Average low75°
Average precipitation0.2 in
Chance of precipitation70%
Record high95° (1968)
Record low71° (1972)
Wed, 2687° / 75°0.16Climate normal
87 °Climate normal

Newcastle, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high87°
Average low75°
Average precipitation0.16 in
Chance of precipitation67%
Record high96° (1968)
Record low70° (1997)
Thu, 2787° / 75°0.15Climate normal
87 °Climate normal

Newcastle, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high87°
Average low75°
Average precipitation0.15 in
Chance of precipitation58%
Record high97° (2011)
Record low69° (1969)
Fri, 2887° / 75°0.17Climate normal
87 °Climate normal

Newcastle, Friday, 28 August

Climate normal for this date — 60-year average.

Average high87°
Average low75°
Average precipitation0.17 in
Chance of precipitation62%
Record high97° (2011)
Record low69° (2014)
Sat, 2986° / 75°0.17Climate normal
86 °Climate normal

Newcastle, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high86°
Average low75°
Average precipitation0.17 in
Chance of precipitation63%
Record high94° (1990)
Record low70° (1984)
Sun, 3086° / 75°0.22Climate normal
86 °Climate normal

Newcastle, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high86°
Average low75°
Average precipitation0.22 in
Chance of precipitation63%
Record high93° (2013)
Record low71° (1969)
Mon, 3186° / 75°0.2Climate normal
86 °Climate normal

Newcastle, Monday, 31 August

Climate normal for this date — 60-year average.

Average high86°
Average low75°
Average precipitation0.2 in
Chance of precipitation80%
Record high94° (1998)
Record low71° (2025)
Tue, 0186° / 75°0.18Climate normal
86 °Climate normal

Newcastle, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high86°
Average low75°
Average precipitation0.18 in
Chance of precipitation72%
Record high92° (1970)
Record low69° (1966)
Wed, 0285° / 74°0.19Climate normal
85 °Climate normal

Newcastle, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high85°
Average low74°
Average precipitation0.19 in
Chance of precipitation72%
Record high92° (1970)
Record low67° (1999)
Thu, 0385° / 74°0.2Climate normal
85 °Climate normal

Newcastle, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high85°
Average low74°
Average precipitation0.2 in
Chance of precipitation60%
Record high93° (1999)
Record low68° (1999)
Fri, 0485° / 74°0.22Climate normal
85 °Climate normal

Newcastle, Friday, 4 September

Climate normal for this date — 60-year average.

Average high85°
Average low74°
Average precipitation0.22 in
Chance of precipitation58%
Record high94° (1999)
Record low69° (1998)
Sat, 0585° / 74°0.22Climate normal
85 °Climate normal

Newcastle, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high85°
Average low74°
Average precipitation0.22 in
Chance of precipitation58%
Record high97° (1999)
Record low68° (2023)
Sun, 0685° / 74°0.26Climate normal
85 °Climate normal

Newcastle, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high85°
Average low74°
Average precipitation0.26 in
Chance of precipitation63%
Record high94° (2023)
Record low68° (1994)

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 Newcastle, FL 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 Newcastle, FL 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.