Arlington Weather Forecast
- 38
- 47
Rain
- 37
- 47
Rain
- 34
- 47
Rain Likely
- 32
- 44
Rain Likely
- 33
- 44
Chance Rain
- 33
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Chance Rain
- 35
- 46
Chance Rain
Today 21 Dec Lowlands of Western Skagit and Northwestern Snohomish Counties
Breezy. A chance of Showers late in the Morning, then Showers likely early in the afternoon. Showers late in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the mid 40s to lower 50s. Southeast wind 15 to 25 Mph becoming south in the afternoon.
Tonight 21 Dec Lowlands of Western Skagit and Northwestern Snohomish Counties
Rain at Times in the Evening, then rain likely late in the evening. A chance of rain after midnight. Rainfall Amounts a quarter to a half inch possible. Lows in the mid 30s to lower 40s. South wind 10 to 20 Mph.
Arlington Temperature Statistics
December Temperature
Arlington Municipal Airport (3.1 miles)
Lowest 1 December, 2025
30 °FAverage December
47.1 °FHighest 15 December, 2025
60.1 °F
Climate (2020–Present)
Arlington Municipal Airport (3.1 miles)
Average Low 2020–2025
42.5 °FAverage 2020–2025
50.7 °FAverage High 2020–2025
59.8 °F