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Weather Information for the United States

Weather Center for the United States, including live weather conditions, real-time lightning, a SkyCam, weather maps, TraffiCams, and much more.

We purchase a variety of different meteorological data services including the FOS, NODDS, and NIDS (NEXRAD radar), and of course, weather satellite imagery and data. From these data we produce forecasts every day of the year, including weekends and holidays.

Forecast Overview

inweathertomorrow was founded in April 2013 and we now provide an extensive range of weather forecasts for the United States. We aim to make these easy to understand and as accurate as possible.


We provide a wide range of forecasts offering different levels of details. These are all available from the left hand menu.

Regional forecasts offering the most detail are split into Day 1 to 5, Day 6 to 14, and Day 15 to 28. For a less detailed, but quicker to view, and easier to print out, we also offer a 28 day regional summary forecast.

National forecasts are intended to quickly give an overview of the average conditions the USA can expect for up to the next 56 days.

City forecasts provide a quick summary of the expected weather during the next 5 days in many USA towns and cities.


Our discussion forecasts are in many ways our most detailed and informative forecasts. Stretching up to 3 months ahead these are updated at regular intervals and attempt to provide a level of detail not freely available anywhere else on the Internet.

Forecasting Methods:

Day 1 - 5: These forecasts are based on analysis and interpretation of global numerical weather prediction (nwp) models including GFS, JMA, ECMWF, UKMO, and DWD.

Day 6 - 14: These forecasts are based on analysis and interpretation of global numerical weather prediction (nwp) models including GFS, JMA, ECMWF, UKMO, and DWD. Additionally, these forecasts include data from our own long range forecasts.

Beyond 15 days: These forecasts are based on our own methods for long range weather forecasting which include pattern matching techniques, and a consideration of solar activity.

Satellite: The latest satellite image can be viewed, as well as an animation displaying a sequence of recent images.

Rainfall Rates: Current rainfall rates across the North Atlantic region are displayed.

Wind speed: Current wind speeds across the North Atlantic region are displayed.

Lightning: Recent lightning strikes detected across western europe are displayed.

Historic Charts and Data: These pages can be used to give an indication of what the weather in the USA was like in years gone by.

United States Climate

The climate in the United States of America is highly diverse due to its vast size and varying topography. Generally, the country has a temperate climate in the northern regions and a subtropical climate in the southern regions. However, there are also arid and semi-arid regions in the west, and a tropical climate in Hawaii and some parts of Florida.

In the northern states, such as Maine, Vermont, and Michigan, the winters are cold and snowy, while the summers are mild to warm. The mid-Atlantic region, including states like New York and Pennsylvania, has hot summers and cool winters. The central region of the country, including states like Texas and Kansas, has a semi-arid to arid climate, with hot summers and mild to cool winters.

The southern states, including Florida, Louisiana, and Texas, have a subtropical climate with mild winters and hot, humid summers. The western states, such as California and Nevada, have a Mediterranean climate, characterized by mild, wet winters and hot, dry summers.

The climate of the United States is also affected by weather patterns, such as El Niño and La Niña, which can result in unusual weather conditions, including droughts, floods, and storms. Additionally, climate change is having an impact on the country's weather patterns, with increased frequency of extreme weather events, such as hurricanes, heatwaves, and wildfires.

The impact of climate change on the United States

Climate change is having a significant impact on the United States, affecting many different aspects of life, including the economy, human health, and the natural environment. Here are some of the ways in which climate change is impacting the country:

  • Rising temperatures: The average temperature in the United States has risen by around 1.8°F (1.0°C) since the late 19th century. This has led to more frequent heatwaves, which can cause heat stroke and other heat-related illnesses, particularly among vulnerable populations such as the elderly and those with pre-existing health conditions.
  • Changes in precipitation patterns: Climate change is causing changes in precipitation patterns, resulting in more frequent and severe droughts and floods. This can have a significant impact on agriculture, affecting crop yields and food prices.
  • Sea level rise: Rising sea levels are causing coastal flooding and erosion, which can damage infrastructure and property. Low-lying areas, such as Miami and New Orleans, are particularly vulnerable.
  • More frequent and severe weather events: Climate change is causing more frequent and severe weather events, such as hurricanes, tornadoes, and wildfires. These events can cause significant damage to homes, businesses, and infrastructure, and put people's lives at risk.
  • Biodiversity loss: Climate change is causing changes in the distribution and abundance of species, which can lead to the loss of biodiversity. This can have a significant impact on ecosystems and the services they provide, such as pollination and water filtration.

In response to these impacts, the United States has taken steps to reduce greenhouse gas emissions and adapt to the effects of climate change. However, much more needs to be done to address this global challenge and protect people and the environment.

The United States has a sophisticated weather forecast service, provided by the National Oceanic and Atmospheric Administration (NOAA) and the National Weather Service (NWS). The NWS provides weather forecasts, warnings, and other weather-related information to the public, as well as specialized forecasts for aviation, marine, and agricultural interests.

The NWS uses a variety of tools and technologies to produce weather forecasts, including computer models, weather satellites, and radar systems. They also rely on observations from weather stations and other sensors across the country to provide accurate and up-to-date information.

In addition to the NWS, there are many private weather forecast companies that provide weather information to businesses and individuals. These companies use similar tools and technologies to produce forecasts, but may also offer more specialized services, such as tailored weather forecasts for specific industries or regions.

The accuracy of weather forecasts in the United States has improved significantly over the past few decades, thanks to advancements in technology and improvements in forecasting techniques. However, weather is inherently unpredictable, and there is always a degree of uncertainty in any forecast. It's important for individuals and businesses to stay up-to-date on weather conditions and heed any warnings or advisories issued by the NWS or other authorities.

Here's some additional information about the weather forecast service in the United States:

  • Forecast models: The NWS uses a variety of computer models to produce weather forecasts, which simulate the behavior of the atmosphere and predict how weather patterns will evolve over time. These models are constantly updated with new data from weather sensors, which helps improve the accuracy of the forecasts.
  • Radar systems: The NWS operates a network of weather radars across the country, which use radio waves to detect precipitation and other weather phenomena. This data is used to produce radar images and to issue warnings for severe weather events such as thunderstorms, tornadoes, and flash floods.
  • Climate data: The NWS also collects and maintains a vast amount of climate data, which includes information on past weather patterns and trends. This data is used to develop long-term climate projections and to track changes in the climate over time.
  • Public alerts: The NWS provides weather warnings and alerts to the public through a variety of channels, including TV and radio broadcasts, smartphone apps, and social media. These alerts are designed to help people stay safe during severe weather events, such as hurricanes, tornadoes, and winter storms.
  • Specialized forecasts: In addition to its general weather forecasts, the NWS also provides specialized forecasts for a variety of industries and interests. For example, it provides aviation forecasts for pilots and air traffic controllers, marine forecasts for boaters and fishermen, and fire weather forecasts for firefighters and land managers.

Overall, the weather forecast service in the United States is a critical resource that helps people and businesses plan for and respond to weather-related events. While no forecast is perfect, the use of advanced technology and data analysis has greatly improved the accuracy of weather predictions, making it easier for people to stay safe and make informed decisions.

The geography of the United States plays a significant role in shaping its climate, as the country spans a wide range of latitudes and elevations, and is bordered by multiple bodies of water. Here are some ways in which geography influences the climate of the United States:

  • Latitude: The United States spans a range of latitudes, from the tropical climate of Hawaii to the subarctic climate of Alaska. This means that the amount of solar radiation the country receives varies widely, which in turn affects factors such as temperature and precipitation.
  • Elevation: The United States also includes a variety of elevations, from the low-lying coastal plains to the high mountains of the Rockies and Appalachians. Higher elevations tend to be cooler and receive more precipitation, while lower elevations tend to be warmer and drier.
  • Proximity to water: The United States is bordered by multiple bodies of water, including the Pacific Ocean, Atlantic Ocean, Gulf of Mexico, and Great Lakes. The presence of water can have a moderating effect on the climate, keeping temperatures more moderate and increasing humidity levels. For example, coastal areas tend to have milder temperatures and higher levels of precipitation compared to inland areas.
  • Topography: The geography of the United States also includes a variety of topographic features, such as mountains, valleys, and plains. These features can affect weather patterns by influencing the movement of air masses and the formation of precipitation. For example, the Rocky Mountains act as a barrier to moisture-laden air masses, resulting in arid conditions in parts of the western United States.

Overall, the geography of the United States plays a complex role in shaping its climate, with factors such as latitude, elevation, proximity to water, and topography all interacting to create a diverse range of climatic conditions.

Meteorological data collected and based on: