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The average temperature in Mladá Boleslav over the whole year is 9°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about -1°C. Mladá Boleslav has no sharply defined rainy season: the chance of rain on a given day runs from 15% in April, the driest month, to 26% in January, the wettest. Winds in Mladá Boleslav are highest in January, averaging 4.4 m/s (16 km/h), and lightest in August, at 2.9 m/s (10 km/h). The prevailing wind is from the W. The clearest skies in Mladá Boleslav come in August, when the sky is typically 61% covered; December is the cloudiest month, at 86%.
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 1°C | -1°C | -5°C | 26% | 83% | 4.4 m/s | 0 | 0 | 3 |
| February | 3°C | -0°C | -2°C | 23% | 77% | 4.4 m/s | 0 | 0 | 8 |
| March | 6°C | 1°C | 1°C | 19% | 73% | 3.9 m/s | 1 | 0 | 24 |
| April | 11°C | 4°C | 6°C | 15% | 67% | 3.7 m/s | 16 | 0 | 50 |
| May | 16°C | 9°C | 12°C | 16% | 67% | 3.5 m/s | 39 | 2 | 70 |
| June | 21°C | 15°C | 19°C | 17% | 62% | 3.1 m/s | 69 | 19 | 62 |
| July | 22°C | 15°C | 20°C | 15% | 64% | 3.1 m/s | 70 | 23 | 58 |
| August | 22°C | 15°C | 20°C | 18% | 61% | 2.9 m/s | 65 | 28 | 54 |
| September | 18°C | 11°C | 15°C | 15% | 64% | 3.1 m/s | 54 | 10 | 69 |
| October | 12°C | 7°C | 8°C | 19% | 73% | 3.7 m/s | 17 | 0 | 62 |
| November | 5°C | 3°C | 1°C | 20% | 82% | 3.7 m/s | 0 | 0 | 18 |
| December | 2°C | 0°C | -3°C | 24% | 86% | 4.4 m/s | 0 | 0 | 4 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Year round, Mladá Boleslav has days of about 1°C at their warmest in January, its coolest month, and 22°C in August, its warmest; the coolest hours of the day run from -1°C to 15°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around January and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Winter in Mladá Boleslav has typical daily highs of about 2°C and lows of about -0°C, with a 24% chance of rain on a given day.
Spring in Mladá Boleslav has typical daily highs of about 11°C and lows of about 5°C, with a 16% chance of rain on a given day.
Summer in Mladá Boleslav has typical daily highs of about 22°C and lows of about 15°C, with a 17% chance of rain on a given day.
Autumn in Mladá Boleslav has typical daily highs of about 12°C and lows of about 7°C, with a 18% chance of rain on a given day.
Mladá Boleslav has no sharply defined rainy season: the chance of rain on a given day runs from 15% in April, the driest month, to 26% in January, the wettest.
Winds in Mladá Boleslav are highest in January, averaging 4.4 m/s (16 km/h), and lightest in August, at 2.9 m/s (10 km/h). The prevailing wind is from the W.
The average temperature in Mladá Boleslav over the whole year is 9°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about -1°C.