Crew Upper Pressure & Humidity
Derry and Strabane — Barometric Trends
Crew Upper Pressure & Humidity Outlook
Crew Upper starts the day with the barometer around 1004 mb, just below the seasonal norm, with humidity in a fairly typical range for the time of year. That hints at a more mixed backdrop at times, especially if the breeze freshens. The range looks fairly wide across the outlook, so the support for settled weather may come and go. The later rise can help conditions calm down in places.
Across the next several days, pressure looks set to vary between 998 mb up to 1020 mb over the coming days. Pressure trends higher through the coming days, favouring quieter spells at times. Humidity looks generally high, which can help low cloud to linger in calmer spells.
Current Readings
Pressure
Humidity
Dew Point
Today’s Hourly Humidity
Today’s Hourly Pressure
14-Day Trends
Humidity Chart
Pressure Chart
Forecast context and reference links
To plan confidently, separate what is likely from what is uncertain. Use the supporting guides to understand why the outlook is behaving the way it is for Crew Upper.
- Northern Ireland Climate for regional patterns and seasonal tendencies.
- UK Climate Overview for a national baseline and how regions compare.
- Northern Ireland for location browsing and regional navigation.
How to interpret confidence
For how forecast reliability changes with lead time, see Forecast Confidence. For transparency on how WeatherEngland sources and updates data, see Methodology.
Background guides
- UK Weather Patterns
- UK Seasonal Weather
- UK Weather Hazards
- UK Weather Safety
- UK Jet Stream
- UK Microclimates
Glossary support
Start with the Weather Glossary. Useful terms for this page include Isobar, Pressure Gradient, Relative Humidity, Dew Point, Anticyclone, and Depression.
FAQ
What is the air pressure in Crew Upper today?
In Crew Upper today, pressure is around 1004 mb. It gives a sense of the overall pattern, though the local detail still comes down to cloud cover and wind. As the period goes on, the barometer tends to lift, supporting a more settled background pattern at times.
What counts as high or low pressure in the UK?
As a rough guide, the low 1020s (around 1020 mb–1024 mb) tends to be a more settled signal, while the low 1000s (around 1000 mb–1004 mb) more often points to Atlantic influence. The overall pattern matters more than any single reading.
How does pressure affect wind in Crew Upper?
Wind strength is driven mainly by the pressure gradient — how quickly pressure changes over distance. Tightly packed isobars usually mean stronger winds; a slack pattern often allows lighter winds, regardless of whether the headline pressure is high or low.
Does low pressure always mean rain in Crew Upper?
No. Low pressure increases the chance of changeable weather, but the wettest rain bands can miss your area entirely depending on where fronts set up.
What does humidity mean for comfort in Crew Upper?
It reflects how much moisture the air is holding compared with its maximum. Higher values can favour haze or low cloud, especially when winds are light. Humidity is frequently elevated through the period, which can keep the air feeling damp and occasionally reduce visibility in lighter winds.