Forecast for Boulder, CO, USA

TODAY, TUESDAY 29 APRIL: Expect a mainly clear start to the day, warming up nicely this afternoon. However, there's some uncertainty later on; one possibility is light rain developing this afternoon or evening, while another is that it stays dry. Winds will be light, mostly easterly, becoming southerly around 5 mph this evening, perhaps gusting 15 to 25 mph near any rain. The low tonight will be around 38°F to 40°F, after a high between 62°F and 66°F today. There's a small chance of measurable rain, perhaps 0.1 inches if it occurs. TOMORROW, WEDNESDAY 30 APRIL: Looks like a lovely warm day tomorrow, mostly sunny! Winds will be light southerly overnight, becoming northeasterly 5 to 10 mph during the day, with gusts possibly reaching 15 to 30 mph later. There is a chance of some rain developing later in the evening or overnight, but it might stay dry. The low will be between 37°F and 40°F, with the high reaching between 68°F and 71°F. THURSDAY 1 MAY: A much cooler and wetter day is likely on Thursday. Rain seems probable, especially during the morning, and could be moderate at times. It might clear up later in the afternoon for some sunshine, or the rain could linger through more of the day – the timing is uncertain. Northerly or northeasterly winds around 5 to 10 mph are expected, potentially gusting 15 to 30 mph with the rain. The low will be around 39°F to 42°F, and the high is expected between 50°F and 58°F, depending on when the rain clears. Rainfall amounts could range up to half an inch in some outcomes. FRIDAY 2 MAY: Conditions should improve on Friday. Any lingering early morning rain should clear, leading to a mainly fine day with sunshine. Winds will be light and variable, becoming northeasterly around 5 mph in the afternoon, possibly gusting 15 to 20 mph later. The low will be around 37°F to 39°F, perhaps a bit cooler if skies clear quickly overnight. The high is expected to be between 64°F and 70°F. There's just a small chance of rain, mainly early. SATURDAY 3 MAY: Saturday looks like a beauty! Expect plenty of sunshine and warm temperatures. Winds will start light, becoming northeasterly then southerly 5 to 10 mph in the evening, and could get quite gusty later, perhaps 20 to 35 mph. The low will be between 36°F and 41°F, warming up to a high between 70°F and 76°F. There's a small chance of some light rain later on, possibly around 0.2 inches if it develops, but it will most likely stay dry. SUNDAY 4 MAY: Another warm one for Sunday, possibly even hot! It should be mainly sunny, although cloud might increase later. Watch out for those southerly winds picking up though, getting strong and gusty by the afternoon, potentially 10 to 20 mph with gusts 30 to 50 mph. The low will be around 40°F to 43°F, with the high reaching between 74°F and 80°F, maybe even a touch higher. There's just a slight risk of some light rain later, perhaps 0.1 inches. MONDAY 5 MAY: Monday's weather is quite uncertain. It could stay dry, warm, and very windy with strong southerlies gusting 30 to 55 mph. However, there's also a good chance of rain developing, possibly becoming persistent and cooling things down, with winds potentially shifting northerly later while remaining gusty. The low will likely be between 46°F and 52°F. The high is tricky, ranging widely from the upper 50s°F if it turns wet, up towards 77°F if it stays dry. Rainfall could range from very little up to an inch if the wetter pattern occurs.