The weather feels worse lately because, in measurable ways, it is. Global surface temperatures have been running more than 1°C above the 20th-century average for several years running, with 2024 setting an all-time record and 2025 close behind. That extra heat doesn’t just make things warmer. It loads the atmosphere with more moisture, shifts the behavior of major wind patterns, and supercharges the ocean systems that drive storms. The result is weather that hits harder, lasts longer, and shows up in places that aren’t used to it.
A Warmer Atmosphere Holds More Water
The single biggest reason storms feel more intense comes down to physics. For every 1°C the atmosphere warms, it can hold about 7% more moisture. That relationship, known as the Clausius-Clapeyron relation, means the air today is carrying noticeably more water vapor than it did a few decades ago. When that moisture gets released, it comes down as heavier rain, wetter snow, or more powerful thunderstorms.
This isn’t a theoretical projection. Attribution studies have started putting numbers on individual events. A record-breaking rainfall in southern Denmark in September 2024, when roughly 145 mm fell on the city of Esbjerg in a single day, was found to be about 60% more likely in today’s climate compared to pre-industrial conditions. The intensity of that event increased by around 10% purely because of climate change. These kinds of analyses are becoming routine, and they consistently show the same pattern: extreme precipitation events are getting both more frequent and more severe.
The Jet Stream Is Getting Stuck
Even when storms aren’t more powerful, they can feel worse simply by parking over the same area for days. That’s increasingly happening because of changes in the jet stream, the high-altitude river of air that steers weather systems across the mid-latitudes.
The jet stream naturally develops kinks and waves, but those waves are becoming more exaggerated. When they slow down or stall, the result is what meteorologists call a blocking pattern. A blocking high-pressure system can trap hot, dry air over one region for days or weeks, creating heat waves and drought. Meanwhile, the low-pressure zones on either side of the block get hammered with persistent rain and cooler temperatures. An omega block, named for its resemblance to the Greek letter, sandwiches a stubborn high-pressure ridge between two cut-off lows. Depending on which side you’re under, you either bake or flood.
These kinks in the jet stream typically last at least five days but can persist for weeks. They’re a major reason why weather extremes now seem to linger. A few days of rain is manageable. Two weeks of rain in the same spot causes rivers to overflow.
Record Ocean Heat Is Fueling Storms
The oceans absorb the vast majority of the extra heat trapped by greenhouse gases, and sea surface temperatures have been hitting record highs. Warmer oceans do two things that make weather worse on land. First, they evaporate more water into the atmosphere, providing extra fuel for storms. Second, they intensify tropical cyclones, which draw their energy directly from warm surface water. Marine heat waves have been linked to stronger cyclones and heavier precipitation events far from the tropics.
The largest increases in atmospheric moisture are expected over the oceans, but that moisture doesn’t stay at sea. Weather systems carry it inland, and when it collides with cooler air or gets lifted by mountains, it dumps as rain or snow. Coastal and downwind regions are especially affected.
La Niña and El Niño Shift the Pattern
On top of the long-term warming trend, natural climate cycles can make any given season feel particularly rough. The El Niño-Southern Oscillation, or ENSO, is the most influential of these. As of early 2026, the Pacific has been in a La Niña phase, with cooler-than-average sea surface temperatures in the east-central equatorial Pacific. A transition to neutral conditions is expected by spring 2026.
La Niña tends to shift the jet stream northward over North America, which generally means drier conditions in the southern U.S. and wetter weather in the Pacific Northwest and northern tier. It also tends to increase Atlantic hurricane activity. El Niño does roughly the opposite. Neither phase is inherently “bad weather,” but each one reshuffles where the worst conditions land, and if you happen to be on the wrong side of that shuffle, the season feels brutal. Layered on top of a warming baseline, even a moderate La Niña or El Niño can push regional weather into record territory.
Humidity Makes Heat Feel Worse
Bad weather isn’t just about storms. Rising humidity is making hot days more dangerous in ways that temperature alone doesn’t capture. Your body cools itself by sweating, but sweat only works if the moisture can evaporate. When the air is already saturated with water vapor, evaporative cooling slows dramatically. On the most humid days, projected increases in atmospheric moisture of 10 to 15% compared to historical norms are enough to push conditions into genuinely hazardous territory.
The critical threshold is a wet-bulb temperature of about 35°C (95°F). At that point, even a healthy person resting in the shade will eventually overheat without air conditioning, because the body simply cannot shed heat fast enough. While sustained wet-bulb readings that high are still rare, the number of days approaching that limit is growing. Heat stress projections show intensification throughout the rest of this century as both temperature and humidity continue to climb together.
Why Your Specific Area Might Be Hit Hard
Global trends explain why weather is getting more extreme overall, but local geography determines how that plays out where you live. A region downwind of warming oceans will see more moisture-loaded storms. A city in the path of a stalled jet stream ridge will roast under a heat dome. A town near a river basin receiving persistent rainfall from a cut-off low will flood.
Blocking patterns are particularly frustrating because they’re almost random in where they set up, but once locked in, they’re stubborn. A cut-off low that separates from the main jet stream flow can drift for many days, producing unsettled weather that seems to go on without end. Modern forecast models handle these systems reasonably well, but they still tend to predict the block will break down sooner than it actually does. If you’ve ever thought “this rain was supposed to end yesterday,” a blocking pattern is often the reason.
Urban areas compound the problem. Paved surfaces absorb and radiate heat, drainage systems built for historical rainfall rates can’t handle the new extremes, and population density means more people are exposed when things go wrong. The weather itself may not be dramatically different a few miles outside of town, but its impact in a city is amplified.
The Trend Is Clear
The three warmest years in the global temperature record are 2023, 2024, and 2025, in that order. That’s not a coincidence or a blip. Each fraction of a degree adds moisture to the atmosphere, energy to storms, and persistence to the patterns that trap bad weather over one place. The physics is straightforward: more heat in the system means more energy available to drive weather, and that energy expresses itself as heavier rain, stronger winds, longer heat waves, and more abrupt swings between extremes. If the weather feels worse than you remember, your memory is probably accurate.