Climate-Zone.com

HomeCitiesPortugalRio de MouroTools › Weather extremes

Weather extremes

How extreme does Rio de Mouro's weather get?

The hottest, coldest, wettest and snowiest days Rio de Mouro has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 28 years of daily weather observations (1997–present), from the Sintra station 7 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Rio de Mouro has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F Aug 1, 2003

That is about 28°F hotter than a normal August afternoon in Rio de Mouro (typical high near 78°F).

The three most extreme on record

1 107°F Aug 1, 2003
2 104°F Aug 3, 2018
3 102°F Aug 2, 2003
❄️ Coldest night
24°F Jan 9, 2009

About 20°F colder than a normal January night in Rio de Mouro (typical low near 44°F).

The three most extreme on record

1 24°F Jan 9, 2009
2 25°F Dec 5, 1998
3 25°F Mar 2, 2005
🌧️ Most rain in one day
4.06 in Nov 6, 2004

The three most extreme on record

1 4.06 in Nov 6, 2004
2 4.02 in Oct 27, 2000
3 3.66 in Nov 24, 2006

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

10°30°50°70°90°110°130° all-time high 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Rio de Mouro's record heat sits well above even a hot day for the season — August's 107°F is about 28°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Rio de Mouro's warmest days reach the high 70s°F and its coldest nights drop to the mid-40s°F. But across the record it has gone as high as 107°F and as low as 24°F. A single day has delivered over 4 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Lisboa Geofisica, a weather station, about 16 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →