Climate averages 1991–2020

Lillestrøm weather
in June.

A mild, wet month: the 3rd warmest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 18.8°C Daytime mean, June
Average low 10.2°C Night-time mean, June
Rainfall 91 mm 12 days with ≥1 mm
Daylight 19 h Sunrise to sunset, per day
Every month in Lillestrøm · average highYear overview

June is a mild month in Lillestrøm: daytime highs average 18.8°C and nights cool to about 10.2°C. By daytime temperature it is the 3rd warmest of the 12 months.

Expect about 91 mm of rain on roughly 12 days, which makes June a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 18 h 41 min on an average June day.

The nearest other city in this atlas is Oslo (18 km away). In June its highs average 19.4°C, 0.6°C warmer than Lillestrøm, with 95 mm of rain.

Among the 8 cities listed in Norway, Lillestrøm ranks 3rd of 8 for the warmest June highs and joint 2nd of 8 for the driest June (rainfall, lowest first). The mean June high of those 8 cities is 17.3°C; Lillestrøm is 1.5°C warmer than that mean.

From June to July, average highs rise by 2.2°C to 21.0°C, and monthly rainfall rises from 91 mm to 94 mm.

The annual picture

June in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -10-50510152025 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly precipitation

Average total · mm
Average monthly precipitation totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Lillestrøm climate table

1991–2020
Monthly climate averages for Lillestrøm, 1991–2020
MonthAverage highHigh / lowAverage lowPrecipitation mm/monthWet days ≥1 mm/dayDaylight hours/dayDay­light h/day
January -2.0°C-6.9°C-6.9°C6510.46.87 h
February -0.7°C-6.5°C-6.5°C498.39.19 h
March 3.6°C-3.5°C-3.5°C498.011.812 h
April 9.4°C0.7°C0.7°C539.014.515 h
May 15.1°C5.8°C5.8°C7411.517.117 h
June, selected 18.8°C10.2°C10.2°C9111.918.719 h
July 21.0°C13.0°C13.0°C9412.618.018 h
August 19.6°C12.3°C12.3°C10413.515.616 h
September 15.0°C8.6°C8.6°C8110.413.013 h
October 8.5°C3.8°C3.8°C8411.410.210 h
November 3.3°C-0.3°C-0.3°C8411.67.68 h
December -0.7°C-5.0°C-5.0°C6610.86.16 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

June in nearby cities

Distance from Lillestrøm

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Lillestrøm) is explained once on the Lillestrøm year overview and on the Sources, method and limits page.