10-day forecast for New Castle, CO: 59° to 96°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
96°
Best day: Tuesday, August 11
88° · 1.09 in
Worst day: Wednesday, August 12
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1091° / 60°0.01
Morning68°feels 68°
Afternoon89°feels 85°
Evening74°feels 73°
Overnight65°feels 65°
91 °
New Castle, Monday, 10 August
Light rain. High 91°, low 60°.
Pressure29.94 inHg
Wind7.2 mph W
Humidity23%
Visibility6.2 mi
Dew point42°
Tue, 1196° / 60°0
Morning69°feels 68°
Afternoon93°feels 89°
Evening82°feels 80°
Overnight61°feels 61°
96 °
New Castle, Tuesday, 11 August
Overcast. High 96°, low 60°.
Pressure29.91 inHg
Wind6.3 mph W
Humidity22%
Visibility6.2 mi
Dew point42°
Wed, 1288° / 62°1.09
Morning71°feels 70°
Afternoon93°feels 89°
Evening61°feels 61°
Overnight64°feels 63°
88 °
New Castle, Wednesday, 12 August
Heavy rain. High 88°, low 62°.
Pressure29.83 inHg
Wind5.8 mph NW
Humidity25%
Visibility6.2 mi
Dew point44°
Thu, 1376° / 59°0.21
Morning64°feels 63°
Afternoon76°feels 76°
Evening74°feels 74°
Overnight63°feels 63°
76 °
New Castle, Thursday, 13 August
Light rain. High 76°, low 59°.
Pressure29.88 inHg
Wind7.6 mph S
Humidity52%
Visibility—
Dew point55°
Fri, 1481° / 60°0.2
Morning65°feels 64°
Afternoon76°feels 75°
Evening76°feels 76°
Overnight65°feels 64°
81 °
New Castle, Friday, 14 August
Light rain. High 81°, low 60°.
Pressure30.00 inHg
Wind9.9 mph W
Humidity51%
Visibility—
Dew point54°
Sat, 1581° / 61°0.04
Morning67°feels 66°
Afternoon80°feels 80°
Evening74°feels 74°
Overnight64°feels 63°
81 °
New Castle, Saturday, 15 August
Light rain. High 81°, low 61°.
Pressure30.06 inHg
Wind8.3 mph S
Humidity38%
Visibility—
Dew point50°
Sun, 1685° / 60°0
Morning67°feels 66°
Afternoon83°feels 82°
Evening83°feels 81°
Overnight69°feels 68°
85 °
New Castle, Sunday, 16 August
Clear. High 85°, low 60°.
Pressure30.09 inHg
Wind8.8 mph SE
Humidity34%
Visibility—
Dew point49°
Mon, 1787° / 62°0
Morning68°feels 67°
Afternoon85°feels 82°
Evening84°feels 82°
Overnight68°feels 67°
87 °
New Castle, Monday, 17 August
Mostly clear. High 87°, low 62°.
Pressure30.06 inHg
Wind6.9 mph S
Humidity30%
Visibility—
Dew point47°
Tue, 1884° / 61°0.13
Morning68°feels 67°
Afternoon83°feels 81°
Evening75°feels 75°
Overnight64°feels 64°
84 °
New Castle, Tuesday, 18 August
Light rain. High 84°, low 61°.
Pressure30.00 inHg
Wind13.2 mph E
Humidity31%
Visibility—
Dew point47°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in New Castle, CO around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.