Istia D'Ombrone-Le Stiacciole, Italy Climate
Temperature through the year
The normal daily high and low and the record for every date at Grosseto, since 1944. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 30
- Normal high
- 25°C
- Record high
- 30°Cin 2021
- Record low
- 7°Cin 2008
- Chance of a wet day
- 36%
- Daylight
- 11 h 48 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 | 13°C | 25°C (1975) | -12°C (1985) | 9.3 | ||
| February | 14°C | 23°C (1991) | -8°C (1991) | 8.5 | ||
| March | 17°C | 26°C (1989) | -7°C (1987) | 43 mm | 9.3 | |
| April | 20°C | 28°C (2007) | -4°C (2021) | 12.0 | ||
| May | 24°C | 35°C (2022) | 1°C (1982) | 9.3 | ||
| June | 29°C | 39°C (2003) | 2°C (1992) | 20 mm | 9.0 | |
| July | 32°C | 40°C (2022) | 9°C (1993) | 13 mm | 3.1 | |
| August | 32°C | 40°C (2003) | 9°C (2013) | 20 mm | 6.2 | |
| September | 27°C | 36°C (1982) | 6°C (2018) | 63 mm | 9.0 | |
| October | 23°C | 34°C (1976) | -1°C (1970) | 53 mm | 9.3 | |
| November | 17°C | 27°C (2004) | -5°C (1981) | 12.0 | ||
| December | 21°C (2023) | -7°C (1973) | 80 mm | 9.3 | ||
| Year | 106 |
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.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Istia D'Ombrone-Le Stiacciole.
The muggiest month is August, when 6 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 3°C | 87% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 3°C | 83% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 5°C | 79% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 7°C | 75% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 11°C | 70% | 81% | 18% | 1% | 0% | 0% | 0% |
| June | 13°C | 64% | 38% | 49% | 13% | 1% | 0% | 0% |
| July | 14°C | 58% | 25% | 44% | 29% | 3% | 0% | 0% |
| August | 15°C | 59% | 21% | 42% | 30% | 6% | 0% | 0% |
| September | 13°C | 68% | 47% | 32% | 19% | 3% | 0% | 0% |
| October | 11°C | 79% | 65% | 24% | 11% | 0% | 0% | 0% |
| November | 8°C | 85% | 90% | 10% | 0% | 0% | 0% | 0% |
| December | 4°C | 87% | 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 36 percent covered on average; the cloudiest is November, at 69 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 13.0 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 15, with 15 h 20 min of daylight; the shortest is Dec 19, with 9 h 01 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 Istia D'Ombrone-Le Stiacciole 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 1944. 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 ITM00016206, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.