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Weather on July 18

Nampa, ID

55 Years of Data

Avg High
93°F
Avg Low
57°F
Warmest
1998
86°F avg
Coldest
1987
56°F avg

About This Date

July 18th in Nampa, ID typically brings hot summer weather, with average highs around 93°F and lows near 57°F — a 36°F daily swing. Over 45 years of records, the warmest July 18th was in 1998 (86°F average), while the coldest was 1987 (56°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 4% of July 18th dates historically, with the wettest July 18th recording 0.53" of rain.

Planning for July 18th in Nampa, ID? Stay hydrated and seek shade during peak afternoon hours.

Warming Trend
0.8°F per decade on this date
YearHighLowAvgPrecipSnow
201583°55°69°
2014100°62°81°
201392°62°77°
201296°58°77°
201195°55°75°
201099°61°80°
2009102°59°81°
200894°60°77°
2007100°69°85°
2006102°59°81°
200590°54°72°
2004103°58°80°
2003102°63°82°
2002100°64°82°
200180°51°66°
200094°64°79°
199990°47°68°
1998warmest107°65°86°
199792°58°75°
199695°49°72°
199595°58°76°
1994101°55°78°
199375°47°61°0.23"
199298°43°70°
199186°52°69°
199096°65°80°
198985°56°70°
198891°54°72°
1987coldest69°42°56°
198678°46°62°
198594°54°74°
198499°55°77°
198383°53°68°
198283°52°67°
198192°60°76°
198088°53°70°
1979103°58°80°
197888°48°68°
197796°58°77°
197684°62°73°0.53"
197591°61°76°
1974100°63°81°
197398°68°83°
197297°53°75°
1971101°70°85°
45 years of data from NAMPA SUGAR FACTORY

Nampa, ID Temperature Range by Month

Average monthly highs and lows. The shaded band shows the typical daily temperature range.

10°30°50°70°90°JFMAMJJASOND
Avg high Avg low

Nampa, ID Monthly Precipitation

Average rainfall and snowfall per month, in inches.

0"2.1"4.1"JFMAMJJASOND1.6"0"
Rain (in) Snow (in)

Nampa, ID Daily Temperature Calendar

Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.

151015202531JanFebMarAprMayJunJulAugSepOctNovDec
Cooler
Hotter
20°40°60°80°100°

Best Time to Visit Nampa, ID

Nampa, ID has no months that meet our "pleasant" threshold — every season has tradeoffs.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal

Browse Weather History

Weather data provided by NOAA Climate Data Online. Not for critical planning.

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