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Climate chart Longmont

Jan.

max 36°F min 19°F

12

Feb.

max 41°F min 21°F

6

Mar.

max 50°F min 32°F

15

Apr.

max 64°F min 37°F

12

May.

max 72°F min 45°F

17

Jun.

max 86°F min 57°F

22

Jul.

max 93°F min 63°F

27

Aug.

max 93°F min 63°F

19

Sep.

max 86°F min 54°F

11

Oct.

max 66°F min 39°F

6

Nov.

max 46°F min 21°F

5

Dec.

max 43°F min 27°F

10

Weekly overview Longmont

Weather Longmont 14 days

Wednesday 22-04-2026 Patchy rain possible 50°F / 63°F

Thursday 23-04-2026 Patchy rain possible 48°F / 68°F

Friday 24-04-2026 Patchy rain possible 52°F / 73°F

Saturday 25-04-2026 Moderate rain 48°F / 70°F

Sunday 26-04-2026 Sunny/Clear 43°F / 63°F

Monday 27-04-2026 Sunny/Clear 43°F / 70°F

Tuesday 28-04-2026 Moderate rain 50°F / 59°F

Wednesday 29-04-2026 Sunny/Clear 41°F / 59°F

Thursday 30-04-2026 Patchy rain possible 41°F / 48°F

Friday 01-05-2026 Patchy rain possible 41°F / 63°F

Saturday 02-05-2026 Patchy rain possible 34°F / 46°F

Sunday 03-05-2026 Partly cloudy 30°F / 54°F

Monday 04-05-2026 Patchy rain possible 30°F / 61°F

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