S
M
T
W
T
F
S
30
96°
71°
31
95°
72°
1
95°
72°
2
94°
70°
3
95°
69°
4
95°
71°
5
93°
70°
6
92°
71°
7
89°
69°
8
90°
71°
9
91°
71°
10
92°
70°
11
91°
68°
12
92°
67°
13
Hist. Avg.
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14
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15
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16
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17
Hist. Avg.
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18
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19
Hist. Avg.
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20
Hist. Avg.
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21
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22
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23
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24
Hist. Avg.
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25
Hist. Avg.
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26
Hist. Avg.
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27
Hist. Avg.
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28
Hist. Avg.
N/A
29
Hist. Avg.
N/A
30
Hist. Avg.
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1
Hist. Avg.
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2
Hist. Avg.
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3
Hist. Avg.
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Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in La Union
La Union's September 2026 forecast shows daily high temperatures ranging from 89° to 96°, with overnight lows between 67° and 72°. The average high for September is 93° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in La Union. See also: October | November | December.
