10-day forecast for Unión, PR: 74° to 87°, with precipitation expected on 10 days. The table below breaks each day into morning, afternoon, evening and overnight.
85°
Best day: Wednesday, October 28
86° · 0.3 in
Worst day: Sunday, November 1
Tap any day below to see morning, afternoon, evening and overnight.
Sat, 2485° / 77°0.16
Morning80°feels 80°
Afternoon84°feels 91°
Evening80°feels 86°
Overnight79°feels 79°
85 °
Unión, Saturday, 24 October
Light rain. High 85°, low 77°.
Pressure29.97 inHg
Wind10.4 mph SE
Humidity78%
Visibility6.2 mi
Dew point75°
Sun, 2584° / 76°0.14
Morning80°feels 80°
Afternoon84°feels 91°
Evening79°feels 79°
Overnight77°feels 79°
84 °
Unión, Sunday, 25 October
Light rain. High 84°, low 76°.
Pressure29.94 inHg
Wind11.1 mph SE
Humidity72%
Visibility6.2 mi
Dew point74°
Mon, 2684° / 75°0.15
Morning79°feels 79°
Afternoon83°feels 89°
Evening78°feels 79°
Overnight76°feels 78°
84 °
Unión, Monday, 26 October
Light rain. High 84°, low 75°.
Pressure29.94 inHg
Wind10.2 mph SE
Humidity68%
Visibility6.2 mi
Dew point74°
Tue, 2783° / 75°0.19
Morning77°feels 80°
Afternoon82°feels 88°
Evening79°feels 83°
Overnight75°feels 77°
83 °
Unión, Tuesday, 27 October
Light rain. High 83°, low 75°.
Pressure30.00 inHg
Wind8.6 mph SE
Humidity73%
Visibility—
Dew point72°
Wed, 2885° / 74°0.05
Morning77°feels 79°
Afternoon83°feels 87°
Evening81°feels 85°
Overnight76°feels 77°
85 °
Unión, Wednesday, 28 October
Light rain. High 85°, low 74°.
Pressure30.00 inHg
Wind8.3 mph SE
Humidity63%
Visibility—
Dew point68°
Thu, 2985° / 76°0.13
Morning79°feels 82°
Afternoon84°feels 91°
Evening81°feels 86°
Overnight77°feels 79°
85 °
Unión, Thursday, 29 October
Light rain. High 85°, low 76°.
Pressure29.97 inHg
Wind10.1 mph SE
Humidity67%
Visibility—
Dew point72°
Fri, 3086° / 75°0.16
Morning78°feels 80°
Afternoon85°feels 90°
Evening81°feels 85°
Overnight77°feels 78°
86 °
Unión, Friday, 30 October
Light rain. High 86°, low 75°.
Pressure29.94 inHg
Wind9.8 mph SE
Humidity60%
Visibility—
Dew point69°
Sat, 3185° / 76°0.22
Morning79°feels 81°
Afternoon84°feels 91°
Evening82°feels 87°
Overnight77°feels 78°
85 °
Unión, Saturday, 31 October
Light rain. High 85°, low 76°.
Pressure29.97 inHg
Wind8.5 mph SE
Humidity68%
Visibility—
Dew point72°
Sun, 0186° / 76°0.3
Morning80°feels 82°
Afternoon85°feels 92°
Evening81°feels 86°
Overnight77°feels 78°
86 °
Unión, Sunday, 1 November
Rain. High 86°, low 76°.
Pressure29.97 inHg
Wind8.3 mph SE
Humidity63%
Visibility—
Dew point71°
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 Unión, PR 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.