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Monthly
Forecasts
Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Holtsville, NY
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January
Average Temperature
High
3°
Feels 1
Low
-4°
Feels -8
Average Precipitation
9 Days
Rain amount
48mm
Snow amount
20.3cm
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Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
4°
13
6°
14
7°
15
3°
16
-1°
17
4°
18
3°
19
0°
20
-3°
21
-2°
22
-1°
23
0°
24
-1°
25
-2°
26
-2°
27
28
29
30
31
Forecast
Monday, January 12, 2026
Day
4°
Feels 0
Wind
23 km/h SW
Gust
39 km/h
Humidity
44%
P.O.P
10%
Night
-1°
Feels -5
Wind
20 km/h W
Gust
30 km/h
Humidity
69%
P.O.P
10%
Historical Averages
Jan 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.