Climate averages 1991–2020
Lillestrøm weather
in July.
A mild, wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Lillestrøm: daytime highs average 21.0°C and nights cool to about 13.0°C. By daytime temperature it is the warmest month of the year.
Expect about 94 mm of rain on roughly 13 days, which makes July a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 17 h 59 min on an average July day.
The nearest other city in this atlas is Oslo (18 km away). In July its highs average 21.6°C, 0.6°C warmer than Lillestrøm, with 100 mm of rain.
Among the 8 cities listed in Norway, Lillestrøm ranks 3rd of 8 for the warmest July highs and 3rd of 8 for the driest July (rainfall, lowest first). The mean July high of those 8 cities is 19.6°C; Lillestrøm is 1.4°C warmer than that mean.
From July to August, average highs fall by 1.4°C to 19.6°C, and monthly rainfall rises from 94 mm to 104 mm.
The annual picture
July in context
Monthly precipitation
Average total · mmAverages 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
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.0°C-6.9°C | -6.9°C | 65 | 10.4 | 6.87 h |
| February | -0.7°C-6.5°C | -6.5°C | 49 | 8.3 | 9.19 h |
| March | 3.6°C-3.5°C | -3.5°C | 49 | 8.0 | 11.812 h |
| April | 9.4°C0.7°C | 0.7°C | 53 | 9.0 | 14.515 h |
| May | 15.1°C5.8°C | 5.8°C | 74 | 11.5 | 17.117 h |
| June | 18.8°C10.2°C | 10.2°C | 91 | 11.9 | 18.719 h |
| July, selected | 21.0°C13.0°C | 13.0°C | 94 | 12.6 | 18.018 h |
| August | 19.6°C12.3°C | 12.3°C | 104 | 13.5 | 15.616 h |
| September | 15.0°C8.6°C | 8.6°C | 81 | 10.4 | 13.013 h |
| October | 8.5°C3.8°C | 3.8°C | 84 | 11.4 | 10.210 h |
| November | 3.3°C-0.3°C | -0.3°C | 84 | 11.6 | 7.68 h |
| December | -0.7°C-5.0°C | -5.0°C | 66 | 10.8 | 6.16 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
July in nearby cities
- Oslo in JulyNorway · 18 kmHigh 21.6°C · Low 13.9°C · 100 mm rain
- Drammen in JulyNorway · 53 kmHigh 21.6°C · Low 13.9°C · 101 mm rain
- Fredrikstad in JulyNorway · 82 kmHigh 20.5°C · Low 14.4°C · 77 mm rain
- Örebro in JulySweden · 246 kmHigh 21.6°C · Low 13.9°C · 77 mm rain
- Gothenburg in JulySweden · 256 kmHigh 20.7°C · Low 13.8°C · 94 mm rain
- Kristiansand in JulyNorway · 266 kmHigh 19.8°C · Low 13.3°C · 95 mm rain
- Borås in JulySweden · 271 kmHigh 20.6°C · Low 13.1°C · 94 mm rain
- Jönköping in JulySweden · 301 kmHigh 20.5°C · Low 13.8°C · 84 mm rain
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 limitsHow 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.