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Weather in Rosslyn, United States

Clear
Feels like 3°
44°
0%
Time in Rosslyn2:19 AM Mon, Jan 17

Weather Advisories

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Today's weather summary

The weather in Rosslyn on Monday, January 17th, is going to be cloudy for most of the day, together with moderate rain before dawn.

There is also a chance for many clouds before dawn around 4 am, and also flurries during the evening at about 9 pm.

Weather details for Rosslyn, on Monday, January 17th:

The highest temperature of the day will be 44°F at about 3 am. The day will have very high relative humidity, with average humidity of 82%, ranging from 59% to a maximum value of 100% at about 4 am. The wind will be strong, and will get up to 22 mph at 2 am, blowing from the east. The cloud coverage will range from 70% around 4 am to as high as 100% around 9 pm with an average of 97%.

The precipitation probability will change throughout the day between 0% and 95%. The highest chance for precipitation will be around 12 am and the lowest probability around 4 am. The dew point will range from 20°F up to a maximum value of 44°F around 3 am.

The visibility is expected to be good with average visibility of 7 mi throughout the day. Atmospheric pressure will be extremely low with average pressure of 989 hPa. Sunrise will be at 7:20 am, and sunset at 5:03 pm, making it a total of 9 hours and 43 minutes of daylight.

Air quality forecast for Rosslyn, on Monday, January 17th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 21 and 54.

Pollen forecast for Rosslyn, on Monday, January 17th:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have very low risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

The weather in Rosslyn on Tuesday, January 18th, will be cloudy for most of the day, with some clouds before dawn.

There's seems to be also high probability of many clouds around noon around 12 pm.

Weather information for Rosslyn, on Tuesday, January 18th:

The highest temperature of the day will be 36°F at about 2 pm. The day will have comfortable humidity, with average humidity of 57%, ranging from 39% to a maximum value of 69% at about 8 am. The wind will be breezy, and will get up to 15 mph at 12 pm, blowing from the north-west. The cloud coverage will range from 0% around 5 pm to as high as 100% around 8 pm with an average of 56%.

There is no probability for any precipitation throughout the day. The dew point will range from 12°F up to a maximum value of 18°F around 12 am.

The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1014 hPa. Sunrise will be at 7:20 am, and sunset at 5:03 pm, making it a total of 9 hours and 43 minutes of daylight.

Air quality forecast for Rosslyn, on Tuesday, January 18th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 23 and 34.

Pollen forecast for Rosslyn, on Tuesday, January 18th:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have very low risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

Full Details

Air quality

AQI50
0100200300400500
Air quality index:Good

Pollen index

Tree
0/5
012345
Weed
0/5
012345
Grass
0/5
012345

Upcoming days

Full Details
Mon
17
25°39°
Tue
18
25°36°
Wed
19
27°40°
Thu
20
15°26°
Fri
21
16°24°
Sat
22
18°27°

FAQ

How warm does it get in Rosslyn?
The average annual highest temperature in Rosslyn is 33.5°C (92.3°F), and the July 27th is the hottest day on average.
How cold does it get in Rosslyn?
The average annual lowest temperature in Rosslyn is -5.5°C (22.1°F), and the January 31st is the coldest day on average.
Which month has the most rain in Rosslyn?
The wettest months in Rosslyn are July and June.
What months does it snow in Rosslyn?
The most common time of year for snow is February, January, March and December.

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