Colleretto Castelnuovo, Italy Climate
The warmest month is July, with an average high of 21°C; the coldest is January, with an average low of -8°C. A normal year brings 844 mm of precipitation.
Temperature through the year
The normal daily high and low and the record for every date at Torino/Bric Croce, since 1973. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 29
- Normal high
- 14°C
- Normal low
- 5°C
- Record high
- 24°Cin 1985
- Record low
- 10°Cin 1987
- Chance of a wet day
- 40%
- Daylight
- 11 h 49 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Record high | Record low | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 0°C | -8°C | 21°C (2007) | -12°C (1985) | 47 mm | 9.3 |
| February | 2°C | -7°C | 20°C (2020) | -9°C (2012) | 45 mm | 8.5 |
| March | 5°C | -4°C | 24°C (2002) | -7°C (2018) | 53 mm | 9.3 |
| April | 9°C | 0°C | 26°C (2011) | -8°C (1983) | 78 mm | 12.0 |
| May | 14°C | 5°C | 29°C (2022) | 1°C (1984) | 99 mm | 15.5 |
| June | 18°C | 8°C | 35°C (2019) | 5°C (1984) | 84 mm | 15.0 |
| July | 21°C | 10°C | 34°C (2022) | 5°C (2000) | 68 mm | 12.4 |
| August | 21°C | 10°C | 35°C (2025) | 5°C (1986) | 68 mm | 12.4 |
| September | 16°C | 7°C | 30°C (2006) | 6°C (1977) | 75 mm | 12.0 |
| October | 11°C | 3°C | 27°C (2023) | -5°C (1986) | 78 mm | 12.4 |
| November | 5°C | -2°C | 22°C (1981) | -5°C (1988) | 93 mm | 12.0 |
| December | 1°C | -6°C | 22°C (1985) | -8°C (2009) | 56 mm | 9.3 |
| Year | 10°C | 1°C | 844 mm | 140 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
844 mm in a normal year, most in May.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Colleretto Castelnuovo.
Days with a mean dew point of 18°C or more are rare here in every month.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | -9°C | 74% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -8°C | 73% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -4°C | 73% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 0°C | 73% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 4°C | 73% | 100% | 0% | 0% | 0% | 0% | 0% |
| June | 8°C | 71% | 97% | 3% | 0% | 0% | 0% | 0% |
| July | 9°C | 68% | 92% | 8% | 0% | 0% | 0% | 0% |
| August | 9°C | 68% | 95% | 5% | 0% | 0% | 0% | 0% |
| September | 6°C | 72% | 100% | 0% | 0% | 0% | 0% | 0% |
| October | 2°C | 76% | 100% | 0% | 0% | 0% | 0% | 0% |
| November | -3°C | 77% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | -8°C | 75% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is July, with the sky 56 percent covered on average; the cloudiest is May, at 73 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is February, averaging 8.3 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 18, with 15 h 41 min of daylight; the shortest is Dec 17, with 8 h 43 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Colleretto Castelnuovo in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
A record is the highest or lowest value on the date in every year the station has reported, back to 1973. It rests on one station, so a neighbor a few miles away can hold different ones.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Records: NOAA GHCN-Daily, station ITM00016061, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.