Is it raining now in Lomza?
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Last update: 12:00, 24 Aug 2026
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Rain in Lomza: What You Need to Know
Lomza (Łomża) sits in one of Poland's coldest regions, with a mean annual temperature of 8.4°C and annual rainfall around 706mm. A Lomza rain radar matters most along the Narew River, where floods come mainly from spring snowmelt rather than summer convective rain — a hyperlocal radar is the clearest way to track that seasonal pattern as it develops.
The mechanism here is different from central and southern Poland. Lomza sits on the Narew River floodplain, within the Łomża Landscape Park, where snowmelt drives seasonal flooding rather than the convective storms that dominate further south. A generic Poland-wide forecast built around summer rain can miss the slower, snowmelt-driven pattern that actually shapes Lomza's spring.
RainViewer draws its Lomza feed from IMGW, refreshed every 5 minutes, so the map reflects the latest radar scan rather than a forecast written hours earlier. What a live map shows and a forecast cannot: whether rain is adding to snowmelt on the Narew floodplain right now or holding off.
Rain by Season in Lomza
Spring snowmelt season (March–April)
Spring snowmelt is the dominant seasonal event on the Narew, with significant flooding in 2010 and 2020 affecting the floodplain within Łomża Landscape Park. This is the window when the radar matters most for tracking added rainfall on top of melting snow.
Long cold winters (November–February)
Winters are long and cold, with temperatures ranging from -6°C to 23°C across the year — one of the widest swings in this batch, consistent with Podlaskie's reputation as one of Poland's coldest regions.
Dairy collection season, year-round
Podlaskie's dairy sector, anchored by SM Mlekpol's plant network near Lomza, runs on a year-round collection cycle rather than a single wet-season peak, though the exact seasonal calendar is not documented.
Why You Need a Rain Radar in Lomza
Narew floodplain residents
The Narew River floodplain within Łomża Landscape Park floods periodically from spring snowmelt, with significant events in 2010 and 2020. Residents near the river can track the radar for added rainfall on top of melting snow rather than wait for a general bulletin.
SM Mlekpol dairy network
SM Mlekpol, one of Europe's largest dairy cooperatives, collects over 2 billion litres of milk annually from 8,000 farmer-members across a plant network including Zambrów near Lomza. Farmers and collection routes exposed to weather can check the radar before moving milk in heavy rain.
Łomża Landscape Park visitors
The Łomża Landscape Park protects the Narew floodplain and is a named outdoor destination directly shaped by river weather. Visitors can check the radar before a walk through the park rather than rely on a general forecast.
Winter travelers
Podlaskie's long, cold winters bring a wide temperature range from -6°C to 23°C across the year. Checking the radar for snow versus rain helps travelers plan around Lomza's coldest stretches.
RainViewer Radar Coverage in Lomza
RainViewer draws radar data for Poland from the Institute of Meteorology and Water Management (IMGW) via danepubliczne.imgw.pl, updated every 5 minutes. Coverage is comprehensive across the country. Lomza sits close enough to Białystok, Ostrołęka, and the wider Podlaskie region that systems moving along the Narew are visible on the same map before they reach town.
Lomza Rain Radar: Frequently Asked Questions
- Is it raining in Lomza right now?
The fastest way to know is a live hyperlocal radar, since rain adding to snowmelt on the Narew floodplain can raise flood risk quickly during spring. RainViewer pulls fresh IMGW radar scans every 5 minutes, showing conditions as they are rather than a forecast written hours earlier.
- Is it a good idea to plan a visit to Lomza Landscape Park around rain?
Łomża Landscape Park protects the Narew floodplain and is a popular outdoor destination shaped directly by river weather. Checking the radar before a park visit is more reliable than a general regional forecast.
- Does rain affect travel around Lomza?
Lomza's annual rainfall of around 706mm falls within a mean temperature of 8.4°C, one of the coldest totals in this stretch of Podlaskie. Checking the live radar before a winter or spring drive shows whether conditions are rain, snow, or clear.
- Does Lomza flood when the Narew rises?
The Narew River floodplain within Łomża Landscape Park has flooded from spring snowmelt in significant events in 2010 and 2020, though sources describe these as affecting valley hydrology without widespread urban inundation in Lomza itself. Residents near the river should track the radar closely each spring.
- When is the best time to visit Lomza to avoid heavy rain?
Lomza's coldest-region climate means long winters and a spring snowmelt season on the Narew that peaks separately from summer rain. Visitors should check the live radar year-round rather than rely on a single wet-season average.
- Why does Lomza's flood risk work differently from southern Poland?
Lomza's Narew River floods mainly from spring snowmelt rather than the summer convective storms that dominate central and southern Poland. That means the biggest local rain risk often overlaps with melting snow, and only a live radar shows how much new rain is adding to the floodplain.
- Is there a live rain radar for Lomza?
Yes — RainViewer's hyperlocal radar for Lomza draws directly from IMGW, refreshing every 5 minutes with new scans instead of a periodic forecast update. The map covers the wider Podlaskie region, so systems approaching along the Narew are visible before they reach town.
- Can I get a rain alert before it hits the Narew floodplain near Lomza?
Yes — RainViewer's rain alerts can be set for a specific point like the Narew floodplain or Łomża Landscape Park, so residents get a notification as a system approaches instead of checking the map manually. That advance window matters most during spring snowmelt season.
Track Rain in Lomza in Real Time
Residents along the Narew floodplain and dairy routes tied to SM Mlekpol's collection network both depend on knowing when rain is adding to snowmelt rather than falling on dry ground. Spring flooding in 2010 and 2020 shows how quickly the floodplain within Łomża Landscape Park can change.
A generic forecast says scattered showers for Podlaskie this week. RainViewer's live hyperlocal radar shows it is already raining over the Narew floodplain while the town center stays dry — that is the call a dairy route driver makes before heading out.
Track rain in Lomza — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
See whether a cell over the Narew floodplain clears in the next two hours or settles in.
Rain alerts before arrival
Set an alert for the floodplain or a dairy collection route and get notified before a system reaches it.
Direction arrows on the map
See whether a front is tracking in toward Lomza or breaking apart before it arrives.
48 hours of radar history
Review the last 48 hours to see how a system moved across the Podlaskie region.
Multiple locations
Track the Narew floodplain, Łomża Landscape Park, and a Mlekpol collection route at the same time.
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