Long Range Weather Forecast for 2018

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See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of the annual Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific. If your city is located inside a region, the region's forecast will apply to you.

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Click on a Region on this Map of the USA

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What Are Long Range Weather Forecasts?

The Old Farmer’s Almanac Long Range Weather Forecasts show deviations from normal temperatures and precipitation amounts, based on 30-year rolling averages gathered by government meteorological agencies, specifically NOAA and Environment Canada. The averages from 1981 to 2010 are the latest available data; these numbers are updated every 10 years.

Our Long Range Weather Forecasts are based on three scientific disciplines:

  • solar science (the study of sunspots and other solar activity)
  • climatology (the study of prevailing weather patterns)
  • meteorology (the study of the atmosphere)

We predict future weather trends and events by comparing solar patterns and historical weather conditions with current solar activity. Learn more about How We Predict the Weather.

How to Read Long Range Weather Forecasts

If our forecast says that temperatures will be “mild” during a certain period of time, this means that we predict milder-than-average temperatures for those dates. In other words, this does not mean that temperatures will feel mild, but rather that temperatures will not be as cold as average (based on the 1981 to 2010 averages). Likewise, “snowy” means only more snow than the 1981–2010 average.

How Accurate Are the Almanac’s Long Range Weather Forecasts?

The Almanac’s weather predictions are made up to 18 months in advance, but are traditionally 80 percent accurate nevertheless. (Not bad for more than 225 years of predicting, we think!) To get the most from long term forecasts, it’s important to look at patterns and trends and not necessarily day-by-day predictions. Weather tends to evolve in patterns that last 5 to 7 days.

As you get closer to the date of your plans, check out our 7-Day Forecasts.

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