10-day forecast for Unión, PR: 72° to 90°, with precipitation expected on 9 days. The table below breaks each day into morning, afternoon, evening and overnight.
85°
Best day: Wednesday, October 21
82° · 0.26 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Thu, 1587° / 77°0.09
Morning82°feels 87°
Afternoon87°feels 100°
Evening80°feels 86°
Overnight79°feels 79°
87 °
Unión, Thursday, 15 October
Light rain. High 87°, low 77°.
Pressure29.97 inHg
Wind9.2 mph SE
Humidity68%
Visibility3.7 mi
Dew point73°
Fri, 1687° / 73°0.11
Morning81°feels 86°
Afternoon87°feels 99°
Evening76°feels 78°
Overnight78°feels 80°
87 °
Unión, Friday, 16 October
Light rain. High 87°, low 73°.
Pressure29.94 inHg
Wind9.8 mph SE
Humidity69%
Visibility4.2 mi
Dew point74°
Sat, 1786° / 72°0.12
Morning80°feels 84°
Afternoon81°feels 87°
Evening77°feels 78°
Overnight72°feels 73°
86 °
Unión, Saturday, 17 October
Light rain. High 86°, low 72°.
Pressure29.94 inHg
Wind8.6 mph SE
Humidity64%
Visibility5.3 mi
Dew point72°
Sun, 1885° / 74°0.08
Morning79°feels 79°
Afternoon82°feels 88°
Evening78°feels 79°
Overnight76°feels 77°
85 °
Unión, Sunday, 18 October
Light rain. High 85°, low 74°.
Pressure29.97 inHg
Wind6.2 mph SE
Humidity64%
Visibility6.2 mi
Dew point71°
Mon, 1984° / 73°0.19
Morning76°feels 78°
Afternoon83°feels 88°
Evening79°feels 79°
Overnight74°feels 75°
84 °
Unión, Monday, 19 October
Light rain. High 84°, low 73°.
Pressure29.97 inHg
Wind5.7 mph SE
Humidity65%
Visibility—
Dew point70°
Tue, 2083° / 73°0.2
Morning76°feels 78°
Afternoon82°feels 88°
Evening80°feels 84°
Overnight77°feels 78°
83 °
Unión, Tuesday, 20 October
Light rain. High 83°, low 73°.
Pressure29.91 inHg
Wind7.7 mph SE
Humidity71%
Visibility—
Dew point71°
Wed, 2185° / 77°0.02
Morning79°feels 81°
Afternoon84°feels 89°
Evening82°feels 86°
Overnight78°feels 79°
85 °
Unión, Wednesday, 21 October
Light rain. High 85°, low 77°.
Pressure29.91 inHg
Wind7.3 mph SE
Humidity66%
Visibility—
Dew point70°
Thu, 2284° / 76°0.06
Morning78°feels 82°
Afternoon84°feels 92°
Evening82°feels 87°
Overnight79°feels 79°
84 °
Unión, Thursday, 22 October
Light rain. High 84°, low 76°.
Pressure29.94 inHg
Wind10.1 mph SE
Humidity73%
Visibility—
Dew point74°
Fri, 2382° / 79°0.26
Morning80°feels 82°
Afternoon82°feels 89°
Evening82°feels 87°
Overnight80°feels 80°
82 °
Unión, Friday, 23 October
Light rain. High 82°, low 79°.
Pressure29.97 inHg
Wind9.5 mph E
Humidity82%
Visibility—
Dew point75°
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.