NWS, American, European side by side around Somerville and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
Somerville, MA is at its warmest in Jul (average highs near 83°F) and coldest in Feb (lows around 25°F), with roughly 52 in of precipitation across the year. Below, compare what NWS, American, European forecast for Somerville right now, and see exactly where they disagree.
Somerville climate by month
average daytime high and overnight low across a typical year
Jan
40°
27°
Feb
42°
25°
Mar
47°
32°
Apr
56°
40°
May
67°
49°
Jun
76°
59°
Jul
83°
67°
Aug
78°
63°
Sep
73°
58°
Oct
64°
48°
Nov
51°
36°
Dec
42°
30°
Common questions
What's the weather in Somerville today?
On this page we show what NWS, American, European each forecast for Somerville today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Somerville today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Somerville and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Somerville?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Somerville forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Somerville?
Jul is typically the warmest month in Somerville, with average highs around 83°F.
How cold does Somerville get?
The coldest month in Somerville is Feb, when overnight lows average about 25°F.
How much rain does Somerville get?
Somerville sees roughly 52 in of precipitation a year, with Mar usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.