Day
4 °C
Night
-5 °C
Sea
0 °C
Precipitation
37 mm
in month
Rainy days
10 days
in month
Daylight
9 hours
average
Sunshine
3 hours
average
Humidity
75 %
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.
Caldwell, Idaho boasts a semi-arid climate with four distinct seasons. The warmest months are July and August, with temperatures often soaring to around 33 °C (92 °F). January and December bring colder days, with highs around 3 °C (38 °F) and 4 °C (38 °F) respectively. Despite being semi-arid, Caldwell receives a fair amount of precipitation, especially in the winter months with January's rainfall reaching 37 mm (1.44 in). Cold nights are typical throughout the year, dipping to -5 °C (22 °F) in January.
January in Caldwell greets you with chilly winter airs, as daytime highs hover around 3 °C (38 °F), and night temperatures often plunge to -5 °C (22 °F). With an average of 10 days of rain or snow, it's essential to keep warm layers handy.
February starts to hint at the approaching spring with a slight uptick in daily temperatures to 8 °C (46 °F) and the nights still crisp at -4 °C (25 °F). Caldwell typically sees around 8 days of rainfall, so keeping an umbrella would be prudent.
March in Caldwell welcomes the spring season, with daytime temperatures reaching up to 14 °C (57 °F). The nights remain cool at an average of 0 °C (32 °F). Expect the gentle touch of the spring breeze, as winds average 3 m/s, and consider a light jacket with 9 days of intermittent rain.
April sees further warming in Caldwell, with average highs reaching a comfortable 18 °C (65 °F). Nighttimes call for a medium-weight blanket, with lows averaging 3 °C (37 °F). As the last of the spring rains tally up to 8 days, the landscapes turn green, and outdoor lovers rejoice.
May's spring fervor continues as Caldwell enjoys daytime highs averaging at 23 °C (73 °F). The increased sunshine leads to longer days perfect for outdoor activities, though the nights cool down to an average of 7 °C (44 °F). A mild 7 days of rainfall means mostly clear skies.
June marks the beginning of the hot summer season in Caldwell, with temperatures peaking around 28 °C (82 °F). The sun beats down for 12 hours a day, and the rain becomes a rare event with only 5 days of rain this month.
July in Caldwell is the highlight of summer, with the mercury climbing to an average of 33 °C (92 °F) during the day. Evening respite comes with cooler temperatures at 14 °C (58 °F). The region enjoys a minimal 2 days of rainfall, making for predominantly sunny and dry conditions.
August maintains the sizzling summer vibe with day temperatures very similar to July, averaging 32 °C (90 °F). The nights offer only a slight cooldown to 13 °C (56 °F). With almost identical minimal rainfall of 2 days, the dry, sunny days continue to be the main theme.
As summer begins to wane in September, Caldwell experiences a pleasant dip in heat to 27 °C (80 °F) during the day, while nights become more comfortable at 8 °C (46 °F). You can still expect plenty of sunshine and only a slight increase in precipitation with 3 days of rain.
October introduces the fall chill with average daytime highs dropping to 19 °C (66 °F). As the leaves change color, the air crisps to an average low of 3 °C (37 °F). Latter-day rain chances increase to about 5 days but are mostly short and not too cold.
November sees a significant turn towards the colder temperatures of the impending winter, with highs now only reaching an average of 10 °C (50 °F) and nights cooling down significantly to -2 °C (29 °F). Caldwell's skies are often overcast, and with 9 days of rain, waterproof gear is suggested.
December in Caldwell marks the arrival of true winter conditions. With daytime highs just a little above freezing around 4 °C (38 °F), and night temperatures averaging -5 °C (22 °F), it's time to don the down jackets and thermal wear.
January nights in Caldwell can be quite cold with average lows of -5 °C (22 °F), making it important to have a good heating system and warm pajamas.
February slightly turns up the dial with average highs of 8 °C (46 °F), which is warmer than January, but still requires a cozy jacket when stepping outside.
With spring's arrival, Caldwell sees a pleasant increase in warmth to an average high of 14 °C (57 °F). It's time to enjoy the outdoors as winter releases its grip.
April's milder climate means you can swap heavy winter coats for a lighter jacket or a sweater. With temperatures reaching highs up to 18 °C (65 °F), spring outfits can blossom fully.
Absolutely, May introduces warmer weather with an average high of 23 °C (73 °F), making it an ideal time for picnics and outdoor sports in Caldwell's beautiful natural settings.
June truly heats up the scene, with daily highs soaring to approx. 28 °C (82 °F), signaling the need for sunscreen and a hat when venturing outside.
July is the hottest month in Caldwell, with typical daytime highs around a scorching 33 °C (92 °F), so light clothing and staying hydrated is a must.
Yes, August temperatures in Caldwell are quite comparable to July, with the thermostat often reading an average high of 32 °C (90 °F) during the day.
September in Caldwell, with daily highs of 27 °C (80 °F), is pleasantly warm – a perfect balance between the sweltering summer and the upcoming cooler fall.
In October, dressing in layers is key in Caldwell as the weather transitions. You'll want a warm jacket for the cool mornings and evenings, with the possibility to peel off layers as the day reaches a high of 19 °C (66 °F).
November in Caldwell ushers in a cooler atmosphere with temperatures averaging a high of 10 °C (50 °F) during the day and night temperatures dropping below freezing.
Yes, December days in Caldwell are cold with average highs creeping just above the freezing mark at 4 °C (38 °F), making for a frosty prelude to winter wonderlands.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.